671603023468044 has 48 divisors (see below), whose sum is σ = 1741214010390400. Its totient is φ = 223864976214288.

The previous prime is 671603023468033. The next prime is 671603023468067. The reversal of 671603023468044 is 440864320306176.

671603023468044 is a `hidden beast` number, since 6 + 7 + 1 + 603 + 0 + 23 + 4 + 6 + 8 + 0 + 4 + 4 = 666.

It is a super-2 number, since 2×671603023468044² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 28464142 + ... + 46404885.

Almost surely, 2^{671603023468044} is an apocalyptic number.

It is an amenable number.

671603023468044 is an abundant number, since it is smaller than the sum of its proper divisors (1069610986922356).

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

671603023468044 is a wasteful number, since it uses less digits than its factorization.

671603023468044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74952099 (or 74952091 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 54.

The spelling of 671603023468044 in words is "six hundred seventy-one trillion, six hundred three billion, twenty-three million, four hundred sixty-eight thousand, forty-four".