20797776802 has 16 divisors (see below), whose sum is σ = 34076780352. Its totient is φ = 9441297520.

The previous prime is 20797776781. The next prime is 20797776823. The reversal of 20797776802 is 20867779702.

It is an interprime number because it is at equal distance from previous prime (20797776781) and next prime (20797776823).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594478 + ... + 628489.

It is an arithmetic number, because the mean of its divisors is an integer number (2129798772).

Almost surely, 2^20797776802 is an apocalyptic number.

20797776802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20797776802 is a deficient number, since it is larger than the sum of its proper divisors (13279003550).

20797776802 is a wasteful number, since it uses less digits than its factorization.

20797776802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223753.

The product of its (nonzero) digits is 4148928, while the sum is 55.

The spelling of 20797776802 in words is "twenty billion, seven hundred ninety-seven million, seven hundred seventy-six thousand, eight hundred two".