87144685700 has 18 divisors (see below), whose sum is σ = 189103968186. Its totient is φ = 34857874240.

The previous prime is 87144685633. The next prime is 87144685741. The reversal of 87144685700 is 758644178.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4247910976 + 82896774724 = 65176^2 + 287918^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 435723329 + ... + 435723528.

Almost surely, 2^87144685700 is an apocalyptic number.

It is an amenable number.

87144685700 is an abundant number, since it is smaller than the sum of its proper divisors (101959282486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87144685700 is a wasteful number, since it uses less digits than its factorization.

87144685700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871446871 (or 871446864 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 87144685700 in words is "eighty-seven billion, one hundred forty-four million, six hundred eighty-five thousand, seven hundred".