64881460308463 has 2 divisors, whose sum is σ = 64881460308464. Its totient is φ = 64881460308462.

The previous prime is 64881460308451. The next prime is 64881460308479. The reversal of 64881460308463 is 36480306418846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64881460308463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64881460308443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32440730154231 + 32440730154232.

It is an arithmetic number, because the mean of its divisors is an integer number (32440730154232).

Almost surely, 2^{64881460308463} is an apocalyptic number.

64881460308463 is a deficient number, since it is larger than the sum of its proper divisors (1).

64881460308463 is an equidigital number, since it uses as much as digits as its factorization.

64881460308463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63700992, while the sum is 61.

The spelling of 64881460308463 in words is "sixty-four trillion, eight hundred eighty-one billion, four hundred sixty million, three hundred eight thousand, four hundred sixty-three".