20543079090240 has 896 divisors, whose sum is σ = 87372631756800. Its totient is φ = 4438784655360.

The previous prime is 20543079090211. The next prime is 20543079090251. The reversal of 20543079090240 is 4209097034502.

20543079090240 is a `hidden beast` number, since 2 + 0 + 5 + 430 + 7 + 90 + 90 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 536619900 + ... + 536658180.

Almost surely, 2^{20543079090240} is an apocalyptic number.

20543079090240 is a gapful number since it is divisible by the number (20) 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 20543079090240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43686315878400).

20543079090240 is an abundant number, since it is smaller than the sum of its proper divisors (66829552666560).

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

20543079090240 is a wasteful number, since it uses less digits than its factorization.

20543079090240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38800 (or 38784 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 20543079090240 in words is "twenty trillion, five hundred forty-three billion, seventy-nine million, ninety thousand, two hundred forty".