87192699780 has 96 divisors (see below), whose sum is σ = 267414618240. Its totient is φ = 21129041920.

The previous prime is 87192699767. The next prime is 87192699817. The reversal of 87192699780 is 8799629178.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1444266 + ... + 1503425.

It is an arithmetic number, because the mean of its divisors is an integer number (2785568940).

Almost surely, 2^87192699780 is an apocalyptic number.

It is an amenable number.

87192699780 is an abundant number, since it is smaller than the sum of its proper divisors (180221918460).

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

87192699780 is a wasteful number, since it uses less digits than its factorization.

87192699780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947749 (or 2947747 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 66.

The spelling of 87192699780 in words is "eighty-seven billion, one hundred ninety-two million, six hundred ninety-nine thousand, seven hundred eighty".