671328501504 has 72 divisors (see below), whose sum is σ = 1792111437312. Its totient is φ = 223100021760.

The previous prime is 671328501479. The next prime is 671328501509. The reversal of 671328501504 is 405105823176.

It is a happy number.

671328501504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×671328501504² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671328501509) 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, 1066224 + ... + 1574639.

Almost surely, 2^671328501504 is an apocalyptic number.

671328501504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

671328501504 is an abundant number, since it is smaller than the sum of its proper divisors (1120782935808).

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

671328501504 is a wasteful number, since it uses less digits than its factorization.

671328501504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641213 (or 2641199 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 671328501504 in words is "six hundred seventy-one billion, three hundred twenty-eight million, five hundred one thousand, five hundred four".