64220221054 has 128 divisors (see below), whose sum is σ = 119120855040. Its totient is φ = 25618982400.

The previous prime is 64220221033. The next prime is 64220221097. The reversal of 64220221054 is 45012202246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36508627 + ... + 36510385.

It is an arithmetic number, because the mean of its divisors is an integer number (930631680).

Almost surely, 2^64220221054 is an apocalyptic number.

64220221054 is a deficient number, since it is larger than the sum of its proper divisors (54900633986).

64220221054 is a wasteful number, since it uses less digits than its factorization.

64220221054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934.

The product of its (nonzero) digits is 7680, while the sum is 28.

The spelling of 64220221054 in words is "sixty-four billion, two hundred twenty million, two hundred twenty-one thousand, fifty-four".