20500511413140 has 288 divisors, whose sum is σ = 73228490899200. Its totient is φ = 4589819351040.

The previous prime is 20500511413133. The next prime is 20500511413171. The reversal of 20500511413140 is 4131411500502.

20500511413140 is a `hidden beast` number, since 2 + 0 + 5 + 0 + 0 + 511 + 4 + 1 + 3 + 140 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6440805 + ... + 9082124.

It is an arithmetic number, because the mean of its divisors is an integer number (254265593400).

Almost surely, 2^{20500511413140} is an apocalyptic number.

20500511413140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20500511413140 is an abundant number, since it is smaller than the sum of its proper divisors (52727979486060).

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

20500511413140 is a wasteful number, since it uses less digits than its factorization.

20500511413140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15523007 (or 15523002 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 20500511413140 its reverse (4131411500502), we get a palindrome (24631922913642).

The spelling of 20500511413140 in words is "twenty trillion, five hundred billion, five hundred eleven million, four hundred thirteen thousand, one hundred forty".