87497370165 has 32 divisors (see below), whose sum is σ = 140248368000. Its totient is φ = 46581166080.

The previous prime is 87497370161. The next prime is 87497370167. The reversal of 87497370165 is 56107379478.

It is a happy number.

It is not a de Polignac number, because 87497370165 - 2² = 87497370161 is a prime.

It is a super-4 number, since 4×87497370165⁴ (a number of 45 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87497370161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28771045 + ... + 28774085.

It is an arithmetic number, because the mean of its divisors is an integer number (4382761500).

Almost surely, 2^87497370165 is an apocalyptic number.

It is an amenable number.

87497370165 is a deficient number, since it is larger than the sum of its proper divisors (52750997835).

87497370165 is a wasteful number, since it uses less digits than its factorization.

87497370165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877.

The product of its (nonzero) digits is 8890560, while the sum is 57.

The spelling of 87497370165 in words is "eighty-seven billion, four hundred ninety-seven million, three hundred seventy thousand, one hundred sixty-five".