16899997373 has 4 divisors (see below), whose sum is σ = 19314282720. Its totient is φ = 14485712028.

The previous prime is 16899997351. The next prime is 16899997391. The reversal of 16899997373 is 37379999861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16899997373 - 2¹² = 16899993277 is a prime.

It is a super-2 number, since 2×16899997373² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16899997297 and 16899997306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16899997333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207142663 + ... + 1207142676.

It is an arithmetic number, because the mean of its divisors is an integer number (4828570680).

Almost surely, 2^16899997373 is an apocalyptic number.

It is an amenable number.

16899997373 is a deficient number, since it is larger than the sum of its proper divisors (2414285347).

16899997373 is an equidigital number, since it uses as much as digits as its factorization.

16899997373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414285346.

The product of its digits is 138883248, while the sum is 71.

The spelling of 16899997373 in words is "sixteen billion, eight hundred ninety-nine million, nine hundred ninety-seven thousand, three hundred seventy-three".