64433015671313 has 32 divisors (see below), whose sum is σ = 69090392448000. Its totient is φ = 59974842977280.

The previous prime is 64433015671237. The next prime is 64433015671351. The reversal of 64433015671313 is 31317651033446.

It is a cyclic number.

It is not a de Polignac number, because 64433015671313 - 2²⁰ = 64433014622737 is a prime.

It is a super-2 number, since 2×64433015671313² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64433015371313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171983648 + ... + 172357886.

It is an arithmetic number, because the mean of its divisors is an integer number (2159074764000).

Almost surely, 2^{64433015671313} is an apocalyptic number.

It is an amenable number.

64433015671313 is a deficient number, since it is larger than the sum of its proper divisors (4657376776687).

64433015671313 is a wasteful number, since it uses less digits than its factorization.

64433015671313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376025.

The product of its (nonzero) digits is 1632960, while the sum is 47.

The spelling of 64433015671313 in words is "sixty-four trillion, four hundred thirty-three billion, fifteen million, six hundred seventy-one thousand, three hundred thirteen".