64561000747 has 2 divisors, whose sum is σ = 64561000748. Its totient is φ = 64561000746.

The previous prime is 64561000739. The next prime is 64561000807. The reversal of 64561000747 is 74700016546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64561000747 - 2³ = 64561000739 is a prime.

It is not a weakly prime, because it can be changed into another prime (64561000727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32280500373 + 32280500374.

It is an arithmetic number, because the mean of its divisors is an integer number (32280500374).

Almost surely, 2^64561000747 is an apocalyptic number.

64561000747 is a deficient number, since it is larger than the sum of its proper divisors (1).

64561000747 is an equidigital number, since it uses as much as digits as its factorization.

64561000747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 64561000747 in words is "sixty-four billion, five hundred sixty-one million, seven hundred forty-seven", and thus it is an aban number.