20862192980 has 12 divisors (see below), whose sum is σ = 43810605300. Its totient is φ = 8344877184.

The previous prime is 20862192973. The next prime is 20862193013. The reversal of 20862192980 is 8929126802.

It can be written as a sum of positive squares in 2 ways, for example, as 3543106576 + 17319086404 = 59524^2 + 131602^2 .

It is a super-2 number, since 2×20862192980² (a number of 21 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 3 ways as a sum of consecutive naturals, for example, 521554805 + ... + 521554844.

It is an arithmetic number, because the mean of its divisors is an integer number (3650883775).

Almost surely, 2^20862192980 is an apocalyptic number.

20862192980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20862192980 is an abundant number, since it is smaller than the sum of its proper divisors (22948412320).

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

20862192980 is a wasteful number, since it uses less digits than its factorization.

20862192980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043109658 (or 1043109656 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 20862192980 in words is "twenty billion, eight hundred sixty-two million, one hundred ninety-two thousand, nine hundred eighty".