64372978853 has 2 divisors, whose sum is σ = 64372978854. Its totient is φ = 64372978852.

The previous prime is 64372978849. The next prime is 64372978867. The reversal of 64372978853 is 35887927346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32443934884 + 31929043969 = 180122^2 + 178687^2 .

It is a cyclic number.

It is not a de Polignac number, because 64372978853 - 2² = 64372978849 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64372978883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32186489426 + 32186489427.

It is an arithmetic number, because the mean of its divisors is an integer number (32186489427).

Almost surely, 2^64372978853 is an apocalyptic number.

It is an amenable number.

64372978853 is a deficient number, since it is larger than the sum of its proper divisors (1).

64372978853 is an equidigital number, since it uses as much as digits as its factorization.

64372978853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 62.

The spelling of 64372978853 in words is "sixty-four billion, three hundred seventy-two million, nine hundred seventy-eight thousand, eight hundred fifty-three".