12801669631 has 2 divisors, whose sum is σ = 12801669632. Its totient is φ = 12801669630.

The previous prime is 12801669623. The next prime is 12801669649. The reversal of 12801669631 is 13696610821.

It is a weak prime.

It is an emirp because it is prime and its reverse (13696610821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12801669631 - 2³ = 12801669623 is a prime.

It is a super-2 number, since 2×12801669631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12801669031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6400834815 + 6400834816.

It is an arithmetic number, because the mean of its divisors is an integer number (6400834816).

Almost surely, 2^12801669631 is an apocalyptic number.

12801669631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12801669631 is an equidigital number, since it uses as much as digits as its factorization.

12801669631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 12801669631 in words is "twelve billion, eight hundred one million, six hundred sixty-nine thousand, six hundred thirty-one".