87278881700 has 18 divisors (see below), whose sum is σ = 189395173506. Its totient is φ = 34911552640.

The previous prime is 87278881663. The next prime is 87278881717. The reversal of 87278881700 is 718887278.

It can be written as a sum of positive squares in 3 ways, for example, as 3541924 + 87275339776 = 1882^2 + 295424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436394309 + ... + 436394508.

Almost surely, 2^87278881700 is an apocalyptic number.

It is an amenable number.

87278881700 is an abundant number, since it is smaller than the sum of its proper divisors (102116291806).

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

87278881700 is a wasteful number, since it uses less digits than its factorization.

87278881700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872788831 (or 872788824 counting only the distinct ones).

The product of its (nonzero) digits is 2809856, while the sum is 56.

The spelling of 87278881700 in words is "eighty-seven billion, two hundred seventy-eight million, eight hundred eighty-one thousand, seven hundred".