87752451689 has 12 divisors (see below), whose sum is σ = 102085557444. Its totient is φ = 75211837344.

The previous prime is 87752451643. The next prime is 87752451733. The reversal of 87752451689 is 98615425778.

It can be written as a sum of positive squares in 2 ways, for example, as 26416976089 + 61335475600 = 162533^2 + 247660^2 .

It is not a de Polignac number, because 87752451689 - 2³² = 83457484393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87752451289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 953507 + ... + 1041479.

It is an arithmetic number, because the mean of its divisors is an integer number (8507129787).

Almost surely, 2^87752451689 is an apocalyptic number.

It is an amenable number.

87752451689 is a deficient number, since it is larger than the sum of its proper divisors (14333105755).

87752451689 is a wasteful number, since it uses less digits than its factorization.

87752451689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108344 (or 108337 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 62.

The spelling of 87752451689 in words is "eighty-seven billion, seven hundred fifty-two million, four hundred fifty-one thousand, six hundred eighty-nine".