20622234136644 has 54 divisors (see below), whose sum is σ = 60639188478414. Its totient is φ = 5892066895680.

The previous prime is 20622234136631. The next prime is 20622234136711. The reversal of 20622234136644 is 44663143222602.

20622234136644 is a `hidden beast` number, since 2 + 0 + 6 + 2 + 223 + 413 + 6 + 6 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15739627982400 + 4882606154244 = 3967320^2 + 2209662^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20622234136644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5845302697 + ... + 5845306224.

Almost surely, 2^{20622234136644} is an apocalyptic number.

It is an amenable number.

20622234136644 is an abundant number, since it is smaller than the sum of its proper divisors (40016954341770).

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

20622234136644 is a wasteful number, since it uses less digits than its factorization.

20622234136644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11690608945 (or 11690608933 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 45.

The spelling of 20622234136644 in words is "twenty trillion, six hundred twenty-two billion, two hundred thirty-four million, one hundred thirty-six thousand, six hundred forty-four".