26620876831 has 2 divisors, whose sum is σ = 26620876832. Its totient is φ = 26620876830.

The previous prime is 26620876771. The next prime is 26620876889. The reversal of 26620876831 is 13867802662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26620876831 - 2⁷ = 26620876703 is a prime.

It is a super-2 number, since 2×26620876831² (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 (26620870831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13310438415 + 13310438416.

It is an arithmetic number, because the mean of its divisors is an integer number (13310438416).

Almost surely, 2^26620876831 is an apocalyptic number.

26620876831 is a deficient number, since it is larger than the sum of its proper divisors (1).

26620876831 is an equidigital number, since it uses as much as digits as its factorization.

26620876831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 26620876831 in words is "twenty-six billion, six hundred twenty million, eight hundred seventy-six thousand, eight hundred thirty-one".