26619427631 has 2 divisors, whose sum is σ = 26619427632. Its totient is φ = 26619427630.

The previous prime is 26619427607. The next prime is 26619427661. The reversal of 26619427631 is 13672491662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26619427631 - 2¹⁸ = 26619165487 is a prime.

It is a super-2 number, since 2×26619427631² (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 (26619427661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13309713815 + 13309713816.

It is an arithmetic number, because the mean of its divisors is an integer number (13309713816).

Almost surely, 2^26619427631 is an apocalyptic number.

26619427631 is a deficient number, since it is larger than the sum of its proper divisors (1).

26619427631 is an equidigital number, since it uses as much as digits as its factorization.

26619427631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The spelling of 26619427631 in words is "twenty-six billion, six hundred nineteen million, four hundred twenty-seven thousand, six hundred thirty-one".