20012559023980 has 24 divisors (see below), whose sum is σ = 42028153686288. Its totient is φ = 8004684612288.

The previous prime is 20012559023969. The next prime is 20012559024041. The reversal of 20012559023980 is 8932095521002.

It is a self number, because there is not a number n which added to its sum of digits gives 20012559023980.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20702979 + ... + 21648058.

It is an arithmetic number, because the mean of its divisors is an integer number (1751173070262).

Almost surely, 2^{20012559023980} is an apocalyptic number.

20012559023980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012559023980 is an abundant number, since it is smaller than the sum of its proper divisors (22015594662308).

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

20012559023980 is a wasteful number, since it uses less digits than its factorization.

20012559023980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42374673 (or 42374671 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 20012559023980 in words is "twenty trillion, twelve billion, five hundred fifty-nine million, twenty-three thousand, nine hundred eighty".