64758169873 has 2 divisors, whose sum is σ = 64758169874. Its totient is φ = 64758169872.

The previous prime is 64758169799. The next prime is 64758169907. The reversal of 64758169873 is 37896185746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53486737984 + 11271431889 = 231272^2 + 106167^2 .

It is a cyclic number.

It is not a de Polignac number, because 64758169873 - 2⁹ = 64758169361 is a prime.

It is a super-2 number, since 2×64758169873² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64758149873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32379084936 + 32379084937.

It is an arithmetic number, because the mean of its divisors is an integer number (32379084937).

Almost surely, 2^64758169873 is an apocalyptic number.

It is an amenable number.

64758169873 is a deficient number, since it is larger than the sum of its proper divisors (1).

64758169873 is an equidigital number, since it uses as much as digits as its factorization.

64758169873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 64.

The spelling of 64758169873 in words is "sixty-four billion, seven hundred fifty-eight million, one hundred sixty-nine thousand, eight hundred seventy-three".