3172913645356 has 96 divisors (see below), whose sum is σ = 7073649508352. Its totient is φ = 1211416197120.

The previous prime is 3172913645333. The next prime is 3172913645401. The reversal of 3172913645356 is 6535463192713.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3172913645297 and 3172913645306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3758140 + ... + 4524316.

Almost surely, 2^{3172913645356} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3172913645356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3536824754176).

3172913645356 is an abundant number, since it is smaller than the sum of its proper divisors (3900735862996).

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

3172913645356 is a wasteful number, since it uses less digits than its factorization.

3172913645356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766599 (or 766597 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 55.

The spelling of 3172913645356 in words is "three trillion, one hundred seventy-two billion, nine hundred thirteen million, six hundred forty-five thousand, three hundred fifty-six".