20642223062400 has 96 divisors (see below), whose sum is σ = 67990322243400. Its totient is φ = 5504592814080.

The previous prime is 20642223062399. The next prime is 20642223062471. The reversal of 20642223062400 is 426032224602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20642223062400² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1075106185 + ... + 1075125384.

Almost surely, 2^{20642223062400} is an apocalyptic number.

20642223062400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20642223062400 is an abundant number, since it is smaller than the sum of its proper divisors (47348099181000).

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

20642223062400 is a wasteful number, since it uses less digits than its factorization.

20642223062400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150231596 (or 2150231579 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

The spelling of 20642223062400 in words is "twenty trillion, six hundred forty-two billion, two hundred twenty-three million, sixty-two thousand, four hundred".