64700967598208 has 16 divisors (see below), whose sum is σ = 128896458887310. Its totient is φ = 32350483799040.

The previous prime is 64700967598207. The next prime is 64700967598213. The reversal of 64700967598208 is 80289576900746.

It can be written as a sum of positive squares in only one way, i.e., 64097188869184 + 603778729024 = 8006072^2 + 777032^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×64700967598208² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64700967598207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252738154553 + ... + 252738154808.

Almost surely, 2^{64700967598208} is an apocalyptic number.

It is an amenable number.

64700967598208 is a deficient number, since it is larger than the sum of its proper divisors (64195491289102).

64700967598208 is an equidigital number, since it uses as much as digits as its factorization.

64700967598208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505476309375 (or 505476309363 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 71.

The spelling of 64700967598208 in words is "sixty-four trillion, seven hundred billion, nine hundred sixty-seven million, five hundred ninety-eight thousand, two hundred eight".