20973075491180 has 48 divisors (see below), whose sum is σ = 45235483413120. Its totient is φ = 8162194491648.

The previous prime is 20973075491171. The next prime is 20973075491183. The reversal of 20973075491180 is 8119457037902.

It is not an unprimeable number, because it can be changed into a prime (20973075491183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20201006 + ... + 21213834.

It is an arithmetic number, because the mean of its divisors is an integer number (942405904440).

Almost surely, 2^{20973075491180} is an apocalyptic number.

20973075491180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20973075491180 is an abundant number, since it is smaller than the sum of its proper divisors (24262407921940).

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

20973075491180 is a wasteful number, since it uses less digits than its factorization.

20973075491180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040858 (or 1040856 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 20973075491180 in words is "twenty trillion, nine hundred seventy-three billion, seventy-five million, four hundred ninety-one thousand, one hundred eighty".