87017756537 has 48 divisors (see below), whose sum is σ = 101733656832. Its totient is φ = 74021713920.

The previous prime is 87017756513. The next prime is 87017756591. The reversal of 87017756537 is 73565771078.

It is a happy number.

It is not a de Polignac number, because 87017756537 - 2²⁴ = 87000979321 is a prime.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87017756597) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89065793 + ... + 89066769.

It is an arithmetic number, because the mean of its divisors is an integer number (2119451184).

Almost surely, 2^87017756537 is an apocalyptic number.

It is an amenable number.

87017756537 is a deficient number, since it is larger than the sum of its proper divisors (14715900295).

87017756537 is a wasteful number, since it uses less digits than its factorization.

87017756537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 8643600, while the sum is 56.

The spelling of 87017756537 in words is "eighty-seven billion, seventeen million, seven hundred fifty-six thousand, five hundred thirty-seven".