71807878016 has 32 divisors (see below), whose sum is σ = 163491152880. Its totient is φ = 30774804480.

The previous prime is 71807877997. The next prime is 71807878049. The reversal of 71807878016 is 61087870817.

It is a tau number, because it is divible by the number of its divisors (32).

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, 40070465 + ... + 40072256.

Almost surely, 2^71807878016 is an apocalyptic number.

It is an amenable number.

71807878016 is an abundant number, since it is smaller than the sum of its proper divisors (91683274864).

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

71807878016 is an equidigital number, since it uses as much as digits as its factorization.

71807878016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80142742 (or 80142730 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 53.

The spelling of 71807878016 in words is "seventy-one billion, eight hundred seven million, eight hundred seventy-eight thousand, sixteen".