671117512376 has 64 divisors (see below), whose sum is σ = 1369063918080. Its totient is φ = 307203632640.

The previous prime is 671117512349. The next prime is 671117512451. The reversal of 671117512376 is 673215711176.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 671117512376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719831 + ... + 1363961.

It is an arithmetic number, because the mean of its divisors is an integer number (21391623720).

Almost surely, 2^671117512376 is an apocalyptic number.

It is an amenable number.

671117512376 is an abundant number, since it is smaller than the sum of its proper divisors (697946405704).

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

671117512376 is a wasteful number, since it uses less digits than its factorization.

671117512376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644364 (or 644360 counting only the distinct ones).

The product of its digits is 370440, while the sum is 47.

The spelling of 671117512376 in words is "six hundred seventy-one billion, one hundred seventeen million, five hundred twelve thousand, three hundred seventy-six".