20040372921504 has 192 divisors, whose sum is σ = 57216686567040. Its totient is φ = 6105171087360.

The previous prime is 20040372921487. The next prime is 20040372921539. The reversal of 20040372921504 is 40512927304002.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51081162 + ... + 51471990.

It is an arithmetic number, because the mean of its divisors is an integer number (298003575870).

Almost surely, 2^{20040372921504} is an apocalyptic number.

20040372921504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20040372921504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28608343283520).

20040372921504 is an abundant number, since it is smaller than the sum of its proper divisors (37176313645536).

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

20040372921504 is a wasteful number, since it uses less digits than its factorization.

20040372921504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391263 (or 391255 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20040372921504 in words is "twenty trillion, forty billion, three hundred seventy-two million, nine hundred twenty-one thousand, five hundred four".