26215652431 has 2 divisors, whose sum is σ = 26215652432. Its totient is φ = 26215652430.

The previous prime is 26215652389. The next prime is 26215652459. The reversal of 26215652431 is 13425651262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26215652431 - 2¹⁵ = 26215619663 is a prime.

It is a super-2 number, since 2×26215652431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26215652131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13107826215 + 13107826216.

It is an arithmetic number, because the mean of its divisors is an integer number (13107826216).

Almost surely, 2^26215652431 is an apocalyptic number.

26215652431 is a deficient number, since it is larger than the sum of its proper divisors (1).

26215652431 is an equidigital number, since it uses as much as digits as its factorization.

26215652431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The spelling of 26215652431 in words is "twenty-six billion, two hundred fifteen million, six hundred fifty-two thousand, four hundred thirty-one".