2491372775423 has 16 divisors (see below), whose sum is σ = 2997577989120. Its totient is φ = 2022774101856.

The previous prime is 2491372775401. The next prime is 2491372775431. The reversal of 2491372775423 is 3245772731942.

It is a cyclic number.

It is not a de Polignac number, because 2491372775423 - 2¹⁰ = 2491372774399 is a prime.

It is a super-2 number, since 2×2491372775423² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491372775453) 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, 451940 + ... + 2277497.

It is an arithmetic number, because the mean of its divisors is an integer number (187348624320).

Almost surely, 2^{2491372775423} is an apocalyptic number.

2491372775423 is a deficient number, since it is larger than the sum of its proper divisors (506205213697).

2491372775423 is a wasteful number, since it uses less digits than its factorization.

2491372775423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736326.

The product of its digits is 17781120, while the sum is 56.

The spelling of 2491372775423 in words is "two trillion, four hundred ninety-one billion, three hundred seventy-two million, seven hundred seventy-five thousand, four hundred twenty-three".