87078667836 has 24 divisors (see below), whose sum is σ = 210189888720. Its totient is φ = 28025318272.

The previous prime is 87078667789. The next prime is 87078667853. The reversal of 87078667836 is 63876687078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125112681 + ... + 125113376.

It is an arithmetic number, because the mean of its divisors is an integer number (8757912030).

Almost surely, 2^87078667836 is an apocalyptic number.

It is an amenable number.

87078667836 is an abundant number, since it is smaller than the sum of its proper divisors (123111220884).

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

87078667836 is a wasteful number, since it uses less digits than its factorization.

87078667836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250226093 (or 250226091 counting only the distinct ones).

The product of its (nonzero) digits is 113799168, while the sum is 66.

The spelling of 87078667836 in words is "eighty-seven billion, seventy-eight million, six hundred sixty-seven thousand, eight hundred thirty-six".