16668988961675 has 48 divisors (see below), whose sum is σ = 21144694688640. Its totient is φ = 13031929109760.

The previous prime is 16668988961629. The next prime is 16668988961687. The reversal of 16668988961675 is 57616988986661.

16668988961675 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16668988961675 - 2¹⁶ = 16668988896139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 371497592 + ... + 371542458.

It is an arithmetic number, because the mean of its divisors is an integer number (440514472680).

Almost surely, 2^{16668988961675} is an apocalyptic number.

16668988961675 is a deficient number, since it is larger than the sum of its proper divisors (4475705726965).

16668988961675 is a wasteful number, since it uses less digits than its factorization.

16668988961675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46700 (or 46695 counting only the distinct ones).

The product of its digits is 11287019520, while the sum is 86.

The spelling of 16668988961675 in words is "sixteen trillion, six hundred sixty-eight billion, nine hundred eighty-eight million, nine hundred sixty-one thousand, six hundred seventy-five".