64477204049 has 2 divisors, whose sum is σ = 64477204050. Its totient is φ = 64477204048.

The previous prime is 64477204039. The next prime is 64477204061. The reversal of 64477204049 is 94040277446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38510137600 + 25967066449 = 196240^2 + 161143^2 .

It is a cyclic number.

It is not a de Polignac number, because 64477204049 - 2⁸ = 64477203793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64477203994 and 64477204012.

It is not a weakly prime, because it can be changed into another prime (64477204039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32238602024 + 32238602025.

It is an arithmetic number, because the mean of its divisors is an integer number (32238602025).

Almost surely, 2^64477204049 is an apocalyptic number.

It is an amenable number.

64477204049 is a deficient number, since it is larger than the sum of its proper divisors (1).

64477204049 is an equidigital number, since it uses as much as digits as its factorization.

64477204049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 64477204049 in words is "sixty-four billion, four hundred seventy-seven million, two hundred four thousand, forty-nine".