87713090768 has 20 divisors (see below), whose sum is σ = 169954124100. Its totient is φ = 43853961984.

The previous prime is 87713090767. The next prime is 87713090783. The reversal of 87713090768 is 86709031778.

It can be written as a sum of positive squares in 2 ways, for example, as 26710018624 + 61003072144 = 163432^2 + 246988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87713090767) 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, 135158 + ... + 440106.

It is an arithmetic number, because the mean of its divisors is an integer number (8497706205).

Almost surely, 2^87713090768 is an apocalyptic number.

It is an amenable number.

87713090768 is a deficient number, since it is larger than the sum of its proper divisors (82241033332).

87713090768 is a wasteful number, since it uses less digits than its factorization.

87713090768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322934 (or 322928 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 87713090768 in words is "eighty-seven billion, seven hundred thirteen million, ninety thousand, seven hundred sixty-eight".