671772607731 has 16 divisors (see below), whose sum is σ = 995686221600. Its totient is φ = 447638010624.

The previous prime is 671772607613. The next prime is 671772607747. The reversal of 671772607731 is 137706277176.

It is not a de Polignac number, because 671772607731 - 2²² = 671768413427 is a prime.

It is a super-2 number, since 2×671772607731² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671772647731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5785746 + ... + 5900711.

It is an arithmetic number, because the mean of its divisors is an integer number (62230388850).

Almost surely, 2^671772607731 is an apocalyptic number.

671772607731 is a deficient number, since it is larger than the sum of its proper divisors (323913613869).

671772607731 is a wasteful number, since it uses less digits than its factorization.

671772607731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11688595 (or 11688589 counting only the distinct ones).

The product of its (nonzero) digits is 3630312, while the sum is 54.

The spelling of 671772607731 in words is "six hundred seventy-one billion, seven hundred seventy-two million, six hundred seven thousand, seven hundred thirty-one".