92640960521 has 4 divisors (see below), whose sum is σ = 93490877700. Its totient is φ = 91791043344.

The previous prime is 92640960499. The next prime is 92640960569. The reversal of 92640960521 is 12506904629.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60226558921 + 32414401600 = 245411^2 + 180040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-92640960521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (92640960421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424958426 + ... + 424958643.

It is an arithmetic number, because the mean of its divisors is an integer number (23372719425).

Almost surely, 2^92640960521 is an apocalyptic number.

It is an amenable number.

92640960521 is a deficient number, since it is larger than the sum of its proper divisors (849917179).

92640960521 is a wasteful number, since it uses less digits than its factorization.

92640960521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849917178.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 92640960521 in words is "ninety-two billion, six hundred forty million, nine hundred sixty thousand, five hundred twenty-one".