16921541675 has 24 divisors (see below), whose sum is σ = 21515081280. Its totient is φ = 13195072800.

The previous prime is 16921541671. The next prime is 16921541713. The reversal of 16921541675 is 57614512961.

It is not a de Polignac number, because 16921541675 - 2² = 16921541671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16921541671) 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, 511796 + ... + 543854.

It is an arithmetic number, because the mean of its divisors is an integer number (896461720).

Almost surely, 2^16921541675 is an apocalyptic number.

16921541675 is a deficient number, since it is larger than the sum of its proper divisors (4593539605).

16921541675 is a wasteful number, since it uses less digits than its factorization.

16921541675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32603 (or 32598 counting only the distinct ones).

The product of its digits is 453600, while the sum is 47.

The spelling of 16921541675 in words is "sixteen billion, nine hundred twenty-one million, five hundred forty-one thousand, six hundred seventy-five".