64221191112959 has 4 divisors (see below), whose sum is σ = 64221638563416. Its totient is φ = 64220743662504.

The previous prime is 64221191112941. The next prime is 64221191112973. The reversal of 64221191112959 is 95921119112246.

64221191112959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64221191112959 - 2²⁴ = 64221174335743 is a prime.

It is a super-2 number, since 2×64221191112959² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64221191112959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64221191112979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223509869 + ... + 223797014.

It is an arithmetic number, because the mean of its divisors is an integer number (16055409640854).

Almost surely, 2^{64221191112959} is an apocalyptic number.

64221191112959 is a deficient number, since it is larger than the sum of its proper divisors (447450457).

64221191112959 is a wasteful number, since it uses less digits than its factorization.

64221191112959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447450456.

The product of its digits is 699840, while the sum is 53.

The spelling of 64221191112959 in words is "sixty-four trillion, two hundred twenty-one billion, one hundred ninety-one million, one hundred twelve thousand, nine hundred fifty-nine".