92709640639 has 16 divisors (see below), whose sum is σ = 119314630656. Its totient is φ = 69910912800.

The previous prime is 92709640591. The next prime is 92709640651. The reversal of 92709640639 is 93604690729.

It is a cyclic number.

It is not a de Polignac number, because 92709640639 - 2³¹ = 90562156991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 92709640639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92709640139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19417312 + ... + 19422085.

It is an arithmetic number, because the mean of its divisors is an integer number (7457164416).

Almost surely, 2^92709640639 is an apocalyptic number.

92709640639 is a deficient number, since it is larger than the sum of its proper divisors (26604990017).

92709640639 is a wasteful number, since it uses less digits than its factorization.

92709640639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38839446.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 92709640639 in words is "ninety-two billion, seven hundred nine million, six hundred forty thousand, six hundred thirty-nine".