64815476458441 has 2 divisors, whose sum is σ = 64815476458442. Its totient is φ = 64815476458440.

The previous prime is 64815476458433. The next prime is 64815476458463. The reversal of 64815476458441 is 14485467451846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63312655455625 + 1502821002816 = 7956925^2 + 1225896^2 .

It is a cyclic number.

It is not a de Polignac number, because 64815476458441 - 2³ = 64815476458433 is a prime.

It is not a weakly prime, because it can be changed into another prime (64815476458241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32407738229220 + 32407738229221.

It is an arithmetic number, because the mean of its divisors is an integer number (32407738229221).

Almost surely, 2^{64815476458441} is an apocalyptic number.

It is an amenable number.

64815476458441 is a deficient number, since it is larger than the sum of its proper divisors (1).

64815476458441 is an equidigital number, since it uses as much as digits as its factorization.

64815476458441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 412876800, while the sum is 67.

The spelling of 64815476458441 in words is "sixty-four trillion, eight hundred fifteen billion, four hundred seventy-six million, four hundred fifty-eight thousand, four hundred forty-one".