16907602921 has 8 divisors (see below), whose sum is σ = 18458573184. Its totient is φ = 15358951920.

The previous prime is 16907602913. The next prime is 16907602931. The reversal of 16907602921 is 12920670961.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16907602921 - 2³ = 16907602913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16907602931) 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, 564550 + ... + 593743.

It is an arithmetic number, because the mean of its divisors is an integer number (2307321648).

Almost surely, 2^16907602921 is an apocalyptic number.

16907602921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16907602921 is a deficient number, since it is larger than the sum of its proper divisors (1550970263).

16907602921 is a wasteful number, since it uses less digits than its factorization.

16907602921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159631.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 16907602921 in words is "sixteen billion, nine hundred seven million, six hundred two thousand, nine hundred twenty-one".