12641690431 has 2 divisors, whose sum is σ = 12641690432. Its totient is φ = 12641690430.

The previous prime is 12641690419. The next prime is 12641690459. The reversal of 12641690431 is 13409614621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12641690431 - 2¹⁵ = 12641657663 is a prime.

It is a super-3 number, since 3×12641690431³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12641690461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320845215 + 6320845216.

It is an arithmetic number, because the mean of its divisors is an integer number (6320845216).

Almost surely, 2^12641690431 is an apocalyptic number.

12641690431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641690431 is an equidigital number, since it uses as much as digits as its factorization.

12641690431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 12641690431 in words is "twelve billion, six hundred forty-one million, six hundred ninety thousand, four hundred thirty-one".