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40172684477 = 173397584917
BaseRepresentation
bin100101011010011110…
…101000010010111101
310211200200222211001212
4211122132220102331
51124233201400402
630242144014205
72621342120042
oct453236502275
9124620884055
1040172684477
1116045484492
127951901365
133a32a94723
141d314bd1c9
1510a1c47952
hex95a7a84bd

40172684477 has 8 divisors (see below), whose sum is σ = 40506741336. Its totient is φ = 39839798592.

The previous prime is 40172684437. The next prime is 40172684521. The reversal of 40172684477 is 77448627104.

It can be written as a sum of positive squares in 4 ways, for example, as 28043186521 + 12129497956 = 167461^2 + 110134^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40172684477 - 28 = 40172684221 is a prime.

It is a super-2 number, since 2×401726844772 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40172684407) 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 7 ways as a sum of consecutive naturals, for example, 223778 + ... + 361139.

It is an arithmetic number, because the mean of its divisors is an integer number (5063342667).

Almost surely, 240172684477 is an apocalyptic number.

It is an amenable number.

40172684477 is a deficient number, since it is larger than the sum of its proper divisors (334056859).

40172684477 is a wasteful number, since it uses less digits than its factorization.

40172684477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585487.

The product of its (nonzero) digits is 2107392, while the sum is 50.

The spelling of 40172684477 in words is "forty billion, one hundred seventy-two million, six hundred eighty-four thousand, four hundred seventy-seven".

Divisors: 1 173 397 68681 584917 101190641 232212049 40172684477