16667968475 has 6 divisors (see below), whose sum is σ = 20668280940. Its totient is φ = 13334374760.

The previous prime is 16667968459. The next prime is 16667968477. The reversal of 16667968475 is 57486976661.

It is not a de Polignac number, because 16667968475 - 2⁴ = 16667968459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16667968477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 333359345 + ... + 333359394.

It is an arithmetic number, because the mean of its divisors is an integer number (3444713490).

Almost surely, 2^16667968475 is an apocalyptic number.

16667968475 is a deficient number, since it is larger than the sum of its proper divisors (4000312465).

16667968475 is an equidigital number, since it uses as much as digits as its factorization.

16667968475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666718749 (or 666718744 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 65.

The spelling of 16667968475 in words is "sixteen billion, six hundred sixty-seven million, nine hundred sixty-eight thousand, four hundred seventy-five".