2791231961718 has 16 divisors (see below), whose sum is σ = 5586425944560. Its totient is φ = 929750317056.

The previous prime is 2791231961701. The next prime is 2791231961719. The reversal of 2791231961718 is 8171691321972.

It is a super-2 number, since 2×2791231961718² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791231961719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165075055 + ... + 165091962.

It is an arithmetic number, because the mean of its divisors is an integer number (349151621535).

Almost surely, 2^{2791231961718} is an apocalyptic number.

2791231961718 is an abundant number, since it is smaller than the sum of its proper divisors (2795193982842).

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

2791231961718 is a wasteful number, since it uses less digits than its factorization.

2791231961718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330168431.

The product of its digits is 2286144, while the sum is 57.

The spelling of 2791231961718 in words is "two trillion, seven hundred ninety-one billion, two hundred thirty-one million, nine hundred sixty-one thousand, seven hundred eighteen".