26431262651 has 2 divisors, whose sum is σ = 26431262652. Its totient is φ = 26431262650.

The previous prime is 26431262647. The next prime is 26431262707. The reversal of 26431262651 is 15626213462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26431262651 - 2² = 26431262647 is a prime.

It is a super-2 number, since 2×26431262651² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26431262051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13215631325 + 13215631326.

It is an arithmetic number, because the mean of its divisors is an integer number (13215631326).

Almost surely, 2^26431262651 is an apocalyptic number.

26431262651 is a deficient number, since it is larger than the sum of its proper divisors (1).

26431262651 is an equidigital number, since it uses as much as digits as its factorization.

26431262651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The spelling of 26431262651 in words is "twenty-six billion, four hundred thirty-one million, two hundred sixty-two thousand, six hundred fifty-one".