20622422655 has 12 divisors (see below), whose sum is σ = 35745532680. Its totient is φ = 10998625392.

The previous prime is 20622422549. The next prime is 20622422657. The reversal of 20622422655 is 55622422602.

20622422655 is a `hidden beast` number, since 2 + 0 + 622 + 4 + 2 + 26 + 5 + 5 = 666.

It is not a de Polignac number, because 20622422655 - 2⁸ = 20622422399 is a prime.

It is a super-2 number, since 2×20622422655² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20622422657) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 229137985 + ... + 229138074.

It is an arithmetic number, because the mean of its divisors is an integer number (2978794390).

Almost surely, 2^20622422655 is an apocalyptic number.

20622422655 is a deficient number, since it is larger than the sum of its proper divisors (15123110025).

20622422655 is a wasteful number, since it uses less digits than its factorization.

20622422655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458276070 (or 458276067 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 20622422655 in words is "twenty billion, six hundred twenty-two million, four hundred twenty-two thousand, six hundred fifty-five".