87121018332 has 36 divisors (see below), whose sum is σ = 220231915176. Its totient is φ = 29039107680.

The previous prime is 87121018321. The next prime is 87121018339. The reversal of 87121018332 is 23381012178.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87121018339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1287898 + ... + 1353854.

Almost surely, 2^87121018332 is an apocalyptic number.

It is an amenable number.

87121018332 is an abundant number, since it is smaller than the sum of its proper divisors (133110896844).

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

87121018332 is a wasteful number, since it uses less digits than its factorization.

87121018332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102658 (or 102653 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 87121018332 in words is "eighty-seven billion, one hundred twenty-one million, eighteen thousand, three hundred thirty-two".