87508751642 has 32 divisors (see below), whose sum is σ = 150680250000. Its totient is φ = 37757703168.

The previous prime is 87508751593. The next prime is 87508751683. The reversal of 87508751642 is 24615780578.

It can be written as a sum of positive squares in 8 ways, for example, as 12234793321 + 75273958321 = 110611^2 + 274361^2 .

It is a super-2 number, since 2×87508751642² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598517 + ... + 730232.

Almost surely, 2^87508751642 is an apocalyptic number.

87508751642 is a deficient number, since it is larger than the sum of its proper divisors (63171498358).

87508751642 is a wasteful number, since it uses less digits than its factorization.

87508751642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328930.

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 87508751642 in words is "eighty-seven billion, five hundred eight million, seven hundred fifty-one thousand, six hundred forty-two".