674718917520 has 40 divisors (see below), whose sum is σ = 2091628645056. Its totient is φ = 179925044608.

The previous prime is 674718917497. The next prime is 674718917527. The reversal of 674718917520 is 25719817476.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (674718917527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405664172 + ... + 1405664651.

Almost surely, 2^674718917520 is an apocalyptic number.

674718917520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

674718917520 is an abundant number, since it is smaller than the sum of its proper divisors (1416909727536).

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

674718917520 is a wasteful number, since it uses less digits than its factorization.

674718917520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811328839 (or 2811328833 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 57.

The spelling of 674718917520 in words is "six hundred seventy-four billion, seven hundred eighteen million, nine hundred seventeen thousand, five hundred twenty".