64221303393 has 48 divisors (see below), whose sum is σ = 105824759040. Its totient is φ = 37178998272.

The previous prime is 64221303371. The next prime is 64221303397. The reversal of 64221303393 is 39330312246.

64221303393 is a `hidden beast` number, since 642 + 2 + 1 + 3 + 0 + 3 + 3 + 9 + 3 = 666.

It is not a de Polignac number, because 64221303393 - 2²⁰ = 64220254817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64221303397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5282680 + ... + 5294822.

It is an arithmetic number, because the mean of its divisors is an integer number (2204682480).

Almost surely, 2^64221303393 is an apocalyptic number.

It is an amenable number.

64221303393 is a deficient number, since it is larger than the sum of its proper divisors (41603455647).

64221303393 is a wasteful number, since it uses less digits than its factorization.

64221303393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14838 (or 14835 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The spelling of 64221303393 in words is "sixty-four billion, two hundred twenty-one million, three hundred three thousand, three hundred ninety-three".