20974106620 has 24 divisors (see below), whose sum is σ = 44291696400. Its totient is φ = 8342771712.

The previous prime is 20974106539. The next prime is 20974106623. The reversal of 20974106620 is 2660147902.

It is a self number, because there is not a number n which added to its sum of digits gives 20974106620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20974106623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2925765 + ... + 2932924.

It is an arithmetic number, because the mean of its divisors is an integer number (1845487350).

Almost surely, 2^20974106620 is an apocalyptic number.

20974106620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20974106620 is an abundant number, since it is smaller than the sum of its proper divisors (23317589780).

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

20974106620 is a wasteful number, since it uses less digits than its factorization.

20974106620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5858877 (or 5858875 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 20974106620 in words is "twenty billion, nine hundred seventy-four million, one hundred six thousand, six hundred twenty".