2691391052944 has 60 divisors (see below), whose sum is σ = 5916611868160. Its totient is φ = 1183896331200.

The previous prime is 2691391052921. The next prime is 2691391052951. The reversal of 2691391052944 is 4492501931962.

It is a super-2 number, since 2×2691391052944² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22362264 + ... + 22482295.

Almost surely, 2^{2691391052944} is an apocalyptic number.

It is an amenable number.

2691391052944 is an abundant number, since it is smaller than the sum of its proper divisors (3225220815216).

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

2691391052944 is a wasteful number, since it uses less digits than its factorization.

2691391052944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44844620 (or 44844603 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 2691391052944 in words is "two trillion, six hundred ninety-one billion, three hundred ninety-one million, fifty-two thousand, nine hundred forty-four".