Search a number
-
+
40553065721 = 75793295103
BaseRepresentation
bin100101110001001001…
…101010110011111001
310212200012202012001002
4211301021222303321
51131023041100341
630344012534345
72633641241210
oct456111526371
9125605665032
1040553065721
111622016a553
127a391813b5
133a9382729c
141d69c18077
1510c533329b
hex97126acf9

40553065721 has 4 divisors (see below), whose sum is σ = 46346360832. Its totient is φ = 34759770612.

The previous prime is 40553065681. The next prime is 40553065759. The reversal of 40553065721 is 12756035504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40553065721 - 234 = 23373196537 is a prime.

It is a super-2 number, since 2×405530657212 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40553065781) 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 3 ways as a sum of consecutive naturals, for example, 2896647545 + ... + 2896647558.

It is an arithmetic number, because the mean of its divisors is an integer number (11586590208).

Almost surely, 240553065721 is an apocalyptic number.

It is an amenable number.

40553065721 is a deficient number, since it is larger than the sum of its proper divisors (5793295111).

40553065721 is an equidigital number, since it uses as much as digits as its factorization.

40553065721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5793295110.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 40553065721 in words is "forty billion, five hundred fifty-three million, sixty-five thousand, seven hundred twenty-one".

Divisors: 1 7 5793295103 40553065721