87021006768 has 30 divisors (see below), whose sum is σ = 243537956844. Its totient is φ = 29007002208.

The previous prime is 87021006689. The next prime is 87021006797. The reversal of 87021006768 is 86760012078.

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, 302156130 + ... + 302156417.

Almost surely, 2^87021006768 is an apocalyptic number.

It is an amenable number.

87021006768 is an abundant number, since it is smaller than the sum of its proper divisors (156516950076).

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

87021006768 is a wasteful number, since it uses less digits than its factorization.

87021006768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604312561 (or 604312552 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 87021006768 in words is "eighty-seven billion, twenty-one million, six thousand, seven hundred sixty-eight".