87487072811668 has 12 divisors (see below), whose sum is σ = 155612252460532. Its totient is φ = 43026429251520.

The previous prime is 87487072811609. The next prime is 87487072811693. The reversal of 87487072811668 is 86611827078478.

It can be written as a sum of positive squares in 2 ways, for example, as 6754655456784 + 80732417354884 = 2598972^2 + 8985122^2 .

It is a hoax number, since the sum of its digits (73) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 87487072811668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179276788305 + ... + 179276788792.

Almost surely, 2^{87487072811668} is an apocalyptic number.

It is an amenable number.

87487072811668 is a deficient number, since it is larger than the sum of its proper divisors (68125179648864).

87487072811668 is a wasteful number, since it uses less digits than its factorization.

87487072811668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358553577162 (or 358553577160 counting only the distinct ones).

The product of its (nonzero) digits is 404619264, while the sum is 73.

The spelling of 87487072811668 in words is "eighty-seven trillion, four hundred eighty-seven billion, seventy-two million, eight hundred eleven thousand, six hundred sixty-eight".