20814833915 has 16 divisors (see below), whose sum is σ = 27062136288. Its totient is φ = 15307869696.

The previous prime is 20814833891. The next prime is 20814833927. The reversal of 20814833915 is 51933841802.

It is a cyclic number.

It is not a de Polignac number, because 20814833915 - 2¹⁴ = 20814817531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2843792 + ... + 2851101.

It is an arithmetic number, because the mean of its divisors is an integer number (1691383518).

Almost surely, 2^20814833915 is an apocalyptic number.

20814833915 is a deficient number, since it is larger than the sum of its proper divisors (6247302373).

20814833915 is a wasteful number, since it uses less digits than its factorization.

20814833915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694958.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 20814833915 in words is "twenty billion, eight hundred fourteen million, eight hundred thirty-three thousand, nine hundred fifteen".