16813420793 has 24 divisors (see below), whose sum is σ = 18531007488. Its totient is φ = 15244587072.

The previous prime is 16813420781. The next prime is 16813420817. The reversal of 16813420793 is 39702431861.

It is not a de Polignac number, because 16813420793 - 2⁸ = 16813420537 is a prime.

It is a super-2 number, since 2×16813420793² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16813480793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4334771 + ... + 4338647.

It is an arithmetic number, because the mean of its divisors is an integer number (772125312).

Almost surely, 2^16813420793 is an apocalyptic number.

16813420793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16813420793 is a deficient number, since it is larger than the sum of its proper divisors (1717586695).

16813420793 is a wasteful number, since it uses less digits than its factorization.

16813420793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353 (or 4340 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 16813420793 in words is "sixteen billion, eight hundred thirteen million, four hundred twenty thousand, seven hundred ninety-three".