64902632117 has 2 divisors, whose sum is σ = 64902632118. Its totient is φ = 64902632116.

The previous prime is 64902632111. The next prime is 64902632159. The reversal of 64902632117 is 71123620946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42581973316 + 22320658801 = 206354^2 + 149401^2 .

It is a cyclic number.

It is not a de Polignac number, because 64902632117 - 2¹⁴ = 64902615733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64902632111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32451316058 + 32451316059.

It is an arithmetic number, because the mean of its divisors is an integer number (32451316059).

Almost surely, 2^64902632117 is an apocalyptic number.

It is an amenable number.

64902632117 is a deficient number, since it is larger than the sum of its proper divisors (1).

64902632117 is an equidigital number, since it uses as much as digits as its factorization.

64902632117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 64902632117 in words is "sixty-four billion, nine hundred two million, six hundred thirty-two thousand, one hundred seventeen".