20801456011431 has 12 divisors (see below), whose sum is σ = 30046690502400. Its totient is φ = 13867571373120.

The previous prime is 20801456011361. The next prime is 20801456011447. The reversal of 20801456011431 is 13411065410802.

20801456011431 is a `hidden beast` number, since 2 + 0 + 8 + 0 + 1 + 4 + 5 + 601 + 1 + 43 + 1 = 666.

It is not a de Polignac number, because 20801456011431 - 2¹⁵ = 20801455978663 is a prime.

It is a super-2 number, since 2×20801456011431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20801456011331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3460530 + ... + 7319711.

It is an arithmetic number, because the mean of its divisors is an integer number (2503890875200).

Almost surely, 2^{20801456011431} is an apocalyptic number.

20801456011431 is a deficient number, since it is larger than the sum of its proper divisors (9245234490969).

20801456011431 is a wasteful number, since it uses less digits than its factorization.

20801456011431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10994646 (or 10994643 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 20801456011431 in words is "twenty trillion, eight hundred one billion, four hundred fifty-six million, eleven thousand, four hundred thirty-one".