20122645023 has 32 divisors (see below), whose sum is σ = 32117657600. Its totient is φ = 12378093408.

The previous prime is 20122645013. The next prime is 20122645033. The reversal of 20122645023 is 32054622102.

It is a happy number.

20122645023 is a `hidden beast` number, since 2 + 0 + 12 + 2 + 645 + 0 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (20122645013) and next prime (20122645033).

It is not a de Polignac number, because 20122645023 - 2⁶ = 20122644959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122645013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 960858 + ... + 981576.

It is an arithmetic number, because the mean of its divisors is an integer number (1003676800).

Almost surely, 2^20122645023 is an apocalyptic number.

20122645023 is a deficient number, since it is larger than the sum of its proper divisors (11995012577).

20122645023 is a wasteful number, since it uses less digits than its factorization.

20122645023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23508 (or 23502 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 20122645023 in words is "twenty billion, one hundred twenty-two million, six hundred forty-five thousand, twenty-three".