221534456162264 has 64 divisors (see below), whose sum is σ = 488193925305600. Its totient is φ = 92281375465344.

The previous prime is 221534456162233. The next prime is 221534456162269. The reversal of 221534456162264 is 462261654435122.

It is a super-2 number, since 2×221534456162264² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221534456162269) 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, 348472094 + ... + 349107245.

It is an arithmetic number, because the mean of its divisors is an integer number (7628030082900).

Almost surely, 2^{221534456162264} is an apocalyptic number.

It is an amenable number.

221534456162264 is an abundant number, since it is smaller than the sum of its proper divisors (266659469143336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221534456162264 is a wasteful number, since it uses less digits than its factorization.

221534456162264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697579512 (or 697579508 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 53.

The spelling of 221534456162264 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-six million, one hundred sixty-two thousand, two hundred sixty-four".