64118052050521 has 16 divisors (see below), whose sum is σ = 74982853782144. Its totient is φ = 53679552562944.

The previous prime is 64118052050509. The next prime is 64118052050539. The reversal of 64118052050521 is 12505025081146.

It is not a de Polignac number, because 64118052050521 - 2¹⁹ = 64118051526233 is a prime.

It is a super-2 number, since 2×64118052050521² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64118052050821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23311185 + ... + 25916161.

It is an arithmetic number, because the mean of its divisors is an integer number (4686428361384).

Almost surely, 2^{64118052050521} is an apocalyptic number.

It is an amenable number.

64118052050521 is a deficient number, since it is larger than the sum of its proper divisors (10864801731623).

64118052050521 is a wasteful number, since it uses less digits than its factorization.

64118052050521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686800.

The product of its (nonzero) digits is 96000, while the sum is 40.

The spelling of 64118052050521 in words is "sixty-four trillion, one hundred eighteen billion, fifty-two million, fifty thousand, five hundred twenty-one".