20793191435863 has 64 divisors (see below), whose sum is σ = 26202685178880. Its totient is φ = 16029449625600.

The previous prime is 20793191435843. The next prime is 20793191435879. The reversal of 20793191435863 is 36853419139702.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20793191435863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20793191435843) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2346592053 + ... + 2346600913.

It is an arithmetic number, because the mean of its divisors is an integer number (409416955920).

It is a 1-persistent number, because it is pandigital, but 2⋅20793191435863 = 41586382871726 is not.

Almost surely, 2^{20793191435863} is an apocalyptic number.

20793191435863 is a deficient number, since it is larger than the sum of its proper divisors (5409493743017).

20793191435863 is a wasteful number, since it uses less digits than its factorization.

20793191435863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9928.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 20793191435863 in words is "twenty trillion, seven hundred ninety-three billion, one hundred ninety-one million, four hundred thirty-five thousand, eight hundred sixty-three".