64615264632131 has 2 divisors, whose sum is σ = 64615264632132. Its totient is φ = 64615264632130.

The previous prime is 64615264632089. The next prime is 64615264632133. The reversal of 64615264632131 is 13123646251646.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64615264632131 - 2¹⁸ = 64615264369987 is a prime.

It is a super-2 number, since 2×64615264632131² (a number of 28 digits) contains 22 as substring.

Together with 64615264632133, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64615264632131.

It is not a weakly prime, because it can be changed into another prime (64615264632133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32307632316065 + 32307632316066.

It is an arithmetic number, because the mean of its divisors is an integer number (32307632316066).

Almost surely, 2^{64615264632131} is an apocalyptic number.

64615264632131 is a deficient number, since it is larger than the sum of its proper divisors (1).

64615264632131 is an equidigital number, since it uses as much as digits as its factorization.

64615264632131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 50.

The spelling of 64615264632131 in words is "sixty-four trillion, six hundred fifteen billion, two hundred sixty-four million, six hundred thirty-two thousand, one hundred thirty-one".