16921001075 has 24 divisors (see below), whose sum is σ = 22903440336. Its totient is φ = 12298688000.

The previous prime is 16921001059. The next prime is 16921001081. The reversal of 16921001075 is 57010012961.

It is not a de Polignac number, because 16921001075 - 2⁴ = 16921001059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 455399 + ... + 491151.

It is an arithmetic number, because the mean of its divisors is an integer number (954310014).

Almost surely, 2^16921001075 is an apocalyptic number.

16921001075 is a deficient number, since it is larger than the sum of its proper divisors (5982439261).

16921001075 is a wasteful number, since it uses less digits than its factorization.

16921001075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37495 (or 37490 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 32.

The spelling of 16921001075 in words is "sixteen billion, nine hundred twenty-one million, one thousand, seventy-five".