64815476458433 has 2 divisors, whose sum is σ = 64815476458434. Its totient is φ = 64815476458432.

The previous prime is 64815476458301. The next prime is 64815476458441. The reversal of 64815476458433 is 33485467451846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63073902680464 + 1741573777969 = 7941908^2 + 1319687^2 .

It is a cyclic number.

It is not a de Polignac number, because 64815476458433 - 2²⁶ = 64815409349569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64815476458463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32407738229216 + 32407738229217.

It is an arithmetic number, because the mean of its divisors is an integer number (32407738229217).

Almost surely, 2^{64815476458433} is an apocalyptic number.

It is an amenable number.

64815476458433 is a deficient number, since it is larger than the sum of its proper divisors (1).

64815476458433 is an equidigital number, since it uses as much as digits as its factorization.

64815476458433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 928972800, while the sum is 68.

The spelling of 64815476458433 in words is "sixty-four trillion, eight hundred fifteen billion, four hundred seventy-six million, four hundred fifty-eight thousand, four hundred thirty-three".