20540776033920 has 64 divisors (see below), whose sum is σ = 65473723614240. Its totient is φ = 5477540275200.

The previous prime is 20540776033919. The next prime is 20540776033961. The reversal of 20540776033920 is 2933067704502.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20540776033920.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5349158506 + ... + 5349162345.

Almost surely, 2^{20540776033920} is an apocalyptic number.

20540776033920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20540776033920 is an abundant number, since it is smaller than the sum of its proper divisors (44932947580320).

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

20540776033920 is a wasteful number, since it uses less digits than its factorization.

20540776033920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10698320873 (or 10698320861 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 48.

The spelling of 20540776033920 in words is "twenty trillion, five hundred forty billion, seven hundred seventy-six million, thirty-three thousand, nine hundred twenty".