87130961020 has 12 divisors (see below), whose sum is σ = 182975018184. Its totient is φ = 34852384400.

The previous prime is 87130960933. The next prime is 87130961039. The reversal of 87130961020 is 2016903178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2178274006 + ... + 2178274045.

It is an arithmetic number, because the mean of its divisors is an integer number (15247918182).

Almost surely, 2^87130961020 is an apocalyptic number.

It is an amenable number.

87130961020 is an abundant number, since it is smaller than the sum of its proper divisors (95844057164).

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

87130961020 is a wasteful number, since it uses less digits than its factorization.

87130961020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356548060 (or 4356548058 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 87130961020 in words is "eighty-seven billion, one hundred thirty million, nine hundred sixty-one thousand, twenty".