671751054636 has 12 divisors (see below), whose sum is σ = 1567419127512. Its totient is φ = 223917018208.

The previous prime is 671751054619. The next prime is 671751054671. The reversal of 671751054636 is 636450157176.

It is a tau number, because it is divible by the number of its divisors (12).

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, 27989627265 + ... + 27989627288.

It is an arithmetic number, because the mean of its divisors is an integer number (130618260626).

Almost surely, 2^671751054636 is an apocalyptic number.

It is an amenable number.

671751054636 is an abundant number, since it is smaller than the sum of its proper divisors (895668072876).

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

671751054636 is a wasteful number, since it uses less digits than its factorization.

671751054636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55979254560 (or 55979254558 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 671751054636 in words is "six hundred seventy-one billion, seven hundred fifty-one million, fifty-four thousand, six hundred thirty-six".