64561854359 has 2 divisors, whose sum is σ = 64561854360. Its totient is φ = 64561854358.

The previous prime is 64561854349. The next prime is 64561854367. The reversal of 64561854359 is 95345816546.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64561854359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64561854349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32280927179 + 32280927180.

It is an arithmetic number, because the mean of its divisors is an integer number (32280927180).

Almost surely, 2^64561854359 is an apocalyptic number.

64561854359 is a deficient number, since it is larger than the sum of its proper divisors (1).

64561854359 is an equidigital number, since it uses as much as digits as its factorization.

64561854359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552000, while the sum is 56.

The spelling of 64561854359 in words is "sixty-four billion, five hundred sixty-one million, eight hundred fifty-four thousand, three hundred fifty-nine".