3917971026957 has 32 divisors (see below), whose sum is σ = 5629487689728. Its totient is φ = 2409481285056.

The previous prime is 3917971026917. The next prime is 3917971026967. The reversal of 3917971026957 is 7596201797193.

It is not a de Polignac number, because 3917971026957 - 2³² = 3913676059661 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3917971026917) 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, 672379278 + ... + 672385104.

It is an arithmetic number, because the mean of its divisors is an integer number (175921490304).

Almost surely, 2^{3917971026957} is an apocalyptic number.

It is an amenable number.

3917971026957 is a deficient number, since it is larger than the sum of its proper divisors (1711516662771).

3917971026957 is a wasteful number, since it uses less digits than its factorization.

3917971026957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14169.

The product of its (nonzero) digits is 45008460, while the sum is 66.

The spelling of 3917971026957 in words is "three trillion, nine hundred seventeen billion, nine hundred seventy-one million, twenty-six thousand, nine hundred fifty-seven".