2657334376991 has 4 divisors (see below), whose sum is σ = 3036953573712. Its totient is φ = 2277715180272.

The previous prime is 2657334376967. The next prime is 2657334377051. The reversal of 2657334376991 is 1996734337562.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2657334376991 - 2¹⁰ = 2657334375967 is a prime.

It is a super-2 number, since 2×2657334376991² (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 (2657334376391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189809598350 + ... + 189809598363.

It is an arithmetic number, because the mean of its divisors is an integer number (759238393428).

Almost surely, 2^{2657334376991} is an apocalyptic number.

2657334376991 is a deficient number, since it is larger than the sum of its proper divisors (379619196721).

2657334376991 is an equidigital number, since it uses as much as digits as its factorization.

2657334376991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379619196720.

The product of its digits is 154314720, while the sum is 65.

The spelling of 2657334376991 in words is "two trillion, six hundred fifty-seven billion, three hundred thirty-four million, three hundred seventy-six thousand, nine hundred ninety-one".