87666470889732 has 36 divisors (see below), whose sum is σ = 253258693682176. Its totient is φ = 25047563111280.

The previous prime is 87666470889713. The next prime is 87666470889743. The reversal of 87666470889732 is 23798807466678.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173941410244 + ... + 173941410747.

Almost surely, 2^{87666470889732} is an apocalyptic number.

It is an amenable number.

87666470889732 is an abundant number, since it is smaller than the sum of its proper divisors (165592222792444).

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

87666470889732 is a wasteful number, since it uses less digits than its factorization.

87666470889732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347882821008 (or 347882821003 counting only the distinct ones).

The product of its (nonzero) digits is 8193540096, while the sum is 81.

The spelling of 87666470889732 in words is "eighty-seven trillion, six hundred sixty-six billion, four hundred seventy million, eight hundred eighty-nine thousand, seven hundred thirty-two".