64942560451 has 2 divisors, whose sum is σ = 64942560452. Its totient is φ = 64942560450.

The previous prime is 64942560407. The next prime is 64942560493. The reversal of 64942560451 is 15406524946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64942560451 - 2³¹ = 62795076803 is a prime.

It is not a weakly prime, because it can be changed into another prime (64942560401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32471280225 + 32471280226.

It is an arithmetic number, because the mean of its divisors is an integer number (32471280226).

Almost surely, 2^64942560451 is an apocalyptic number.

64942560451 is a deficient number, since it is larger than the sum of its proper divisors (1).

64942560451 is an equidigital number, since it uses as much as digits as its factorization.

64942560451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 64942560451 in words is "sixty-four billion, nine hundred forty-two million, five hundred sixty thousand, four hundred fifty-one".