64504602377 has 2 divisors, whose sum is σ = 64504602378. Its totient is φ = 64504602376.

The previous prime is 64504602361. The next prime is 64504602389. The reversal of 64504602377 is 77320640546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56531719696 + 7972882681 = 237764^2 + 89291^2 .

It is a cyclic number.

It is not a de Polignac number, because 64504602377 - 2⁴ = 64504602361 is a prime.

It is not a weakly prime, because it can be changed into another prime (64504602977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32252301188 + 32252301189.

It is an arithmetic number, because the mean of its divisors is an integer number (32252301189).

Almost surely, 2^64504602377 is an apocalyptic number.

It is an amenable number.

64504602377 is a deficient number, since it is larger than the sum of its proper divisors (1).

64504602377 is an equidigital number, since it uses as much as digits as its factorization.

64504602377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 44.

The spelling of 64504602377 in words is "sixty-four billion, five hundred four million, six hundred two thousand, three hundred seventy-seven".