2891715790739 has 16 divisors (see below), whose sum is σ = 3068384548320. Its totient is φ = 2715778007040.

The previous prime is 2891715790721. The next prime is 2891715790757. The reversal of 2891715790739 is 9370975171982.

It is an interprime number because it is at equal distance from previous prime (2891715790721) and next prime (2891715790757).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2891715790739 is a prime.

It is a super-2 number, since 2×2891715790739² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2891711790739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138157427 + ... + 138178355.

It is an arithmetic number, because the mean of its divisors is an integer number (191774034270).

Almost surely, 2^{2891715790739} is an apocalyptic number.

2891715790739 is a deficient number, since it is larger than the sum of its proper divisors (176668757581).

2891715790739 is a wasteful number, since it uses less digits than its factorization.

2891715790739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37990.

The product of its (nonzero) digits is 60011280, while the sum is 68.

The spelling of 2891715790739 in words is "two trillion, eight hundred ninety-one billion, seven hundred fifteen million, seven hundred ninety thousand, seven hundred thirty-nine".