26956378131 has 4 divisors (see below), whose sum is σ = 35941837512. Its totient is φ = 17970918752.

The previous prime is 26956378123. The next prime is 26956378153. The reversal of 26956378131 is 13187365962.

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

It is a cyclic number.

It is not a de Polignac number, because 26956378131 - 2³ = 26956378123 is a prime.

It is a super-2 number, since 2×26956378131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26956378171) 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, 4492729686 + ... + 4492729691.

It is an arithmetic number, because the mean of its divisors is an integer number (8985459378).

Almost surely, 2^26956378131 is an apocalyptic number.

26956378131 is a deficient number, since it is larger than the sum of its proper divisors (8985459381).

26956378131 is an equidigital number, since it uses as much as digits as its factorization.

26956378131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8985459380.

The product of its digits is 1632960, while the sum is 51.

The spelling of 26956378131 in words is "twenty-six billion, nine hundred fifty-six million, three hundred seventy-eight thousand, one hundred thirty-one".