16813422906 has 16 divisors (see below), whose sum is σ = 38430681024. Its totient is φ = 4803835104.

The previous prime is 16813422877. The next prime is 16813422907. The reversal of 16813422906 is 60922431861.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 400319593 = 16813422906 / (1 + 6 + 8 + 1 + 3 + 4 + 2 + 2 + 9 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (16813422907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200159755 + ... + 200159838.

It is an arithmetic number, because the mean of its divisors is an integer number (2401917564).

Almost surely, 2^16813422906 is an apocalyptic number.

16813422906 is an abundant number, since it is smaller than the sum of its proper divisors (21617258118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16813422906 is a wasteful number, since it uses less digits than its factorization.

16813422906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400319605.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 16813422906 in words is "sixteen billion, eight hundred thirteen million, four hundred twenty-two thousand, nine hundred six".