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40157945253 = 324461993917
BaseRepresentation
bin100101011001100110…
…011001110110100101
310211122200020222122200
4211121212121312211
51124220413222003
630240500045113
72621102621406
oct453146316645
9124580228580
1040157945253
1116038127708
127948993799
133a2ca039aa
141d2d5639ad
1510a07d56a3
hex959999da5

40157945253 has 6 divisors (see below), whose sum is σ = 58005920934. Its totient is φ = 26771963496.

The previous prime is 40157945213. The next prime is 40157945263. The reversal of 40157945253 is 35254975104.

40157945253 is a `hidden beast` number, since 40 + 15 + 79 + 4 + 525 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39312182529 + 845762724 = 198273^2 + 29082^2 .

It is not a de Polignac number, because 40157945253 - 28 = 40157944997 is a prime.

It is a super-2 number, since 2×401579452532 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40157945199 and 40157945208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40157945203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2230996950 + ... + 2230996967.

It is an arithmetic number, because the mean of its divisors is an integer number (9667653489).

Almost surely, 240157945253 is an apocalyptic number.

It is an amenable number.

40157945253 is a deficient number, since it is larger than the sum of its proper divisors (17847975681).

40157945253 is a wasteful number, since it uses less digits than its factorization.

40157945253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461993923 (or 4461993920 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 40157945253 in words is "forty billion, one hundred fifty-seven million, nine hundred forty-five thousand, two hundred fifty-three".

Divisors: 1 3 9 4461993917 13385981751 40157945253