671344746621 has 32 divisors (see below), whose sum is σ = 982630656000. Its totient is φ = 406335830208.

The previous prime is 671344746617. The next prime is 671344746629. The reversal of 671344746621 is 126647443176.

It is not a de Polignac number, because 671344746621 - 2² = 671344746617 is a prime.

It is a super-2 number, since 2×671344746621² (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 (671344746629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2725201 + ... + 2961318.

It is an arithmetic number, because the mean of its divisors is an integer number (30707208000).

Almost surely, 2^671344746621 is an apocalyptic number.

It is an amenable number.

671344746621 is a deficient number, since it is larger than the sum of its proper divisors (311285909379).

671344746621 is a wasteful number, since it uses less digits than its factorization.

671344746621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686633.

The product of its digits is 4064256, while the sum is 51.

The spelling of 671344746621 in words is "six hundred seventy-one billion, three hundred forty-four million, seven hundred forty-six thousand, six hundred twenty-one".