53221106421264 has 80 divisors (see below), whose sum is σ = 137646690048000. Its totient is φ = 17719881704448.

The previous prime is 53221106421239. The next prime is 53221106421299. The reversal of 53221106421264 is 46212460112235.

It is a super-3 number, since 3×53221106421264³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238437937 + ... + 238661039.

It is an arithmetic number, because the mean of its divisors is an integer number (1720583625600).

Almost surely, 2^{53221106421264} is an apocalyptic number.

It is an amenable number.

53221106421264 is an abundant number, since it is smaller than the sum of its proper divisors (84425583626736).

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

53221106421264 is a wasteful number, since it uses less digits than its factorization.

53221106421264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228832 (or 228826 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 53221106421264 its reverse (46212460112235), we get a palindrome (99433566533499).

The spelling of 53221106421264 in words is "fifty-three trillion, two hundred twenty-one billion, one hundred six million, four hundred twenty-one thousand, two hundred sixty-four".