16928948643 has 16 divisors (see below), whose sum is σ = 23891212800. Its totient is φ = 10632889440.

The previous prime is 16928948639. The next prime is 16928948651. The reversal of 16928948643 is 34684982961.

It is not a de Polignac number, because 16928948643 - 2² = 16928948639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16928948243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810123 + ... + 830756.

It is an arithmetic number, because the mean of its divisors is an integer number (1493200800).

Almost surely, 2^16928948643 is an apocalyptic number.

16928948643 is a deficient number, since it is larger than the sum of its proper divisors (6962264157).

16928948643 is a wasteful number, since it uses less digits than its factorization.

16928948643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641082.

The product of its digits is 17915904, while the sum is 60.

The spelling of 16928948643 in words is "sixteen billion, nine hundred twenty-eight million, nine hundred forty-eight thousand, six hundred forty-three".