3953597253991 has 24 divisors (see below), whose sum is σ = 5050680405120. Its totient is φ = 3028509414480.

The previous prime is 3953597253941. The next prime is 3953597254027. The reversal of 3953597253991 is 1993527953593.

It is not a de Polignac number, because 3953597253991 - 2⁷ = 3953597253863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3953597253991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3953597253901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39507361 + ... + 39607306.

It is an arithmetic number, because the mean of its divisors is an integer number (210445016880).

Almost surely, 2^{3953597253991} is an apocalyptic number.

3953597253991 is a deficient number, since it is larger than the sum of its proper divisors (1097083151129).

3953597253991 is a wasteful number, since it uses less digits than its factorization.

3953597253991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79114755 (or 79114744 counting only the distinct ones).

The product of its digits is 310007250, while the sum is 70.

The spelling of 3953597253991 in words is "three trillion, nine hundred fifty-three billion, five hundred ninety-seven million, two hundred fifty-three thousand, nine hundred ninety-one".