181421968675 has 12 divisors (see below), whose sum is σ = 225566371360. Its totient is φ = 144748458720.

The previous prime is 181421968657. The next prime is 181421968729. The reversal of 181421968675 is 576869124181.

It is not a de Polignac number, because 181421968675 - 2⁷ = 181421968547 is a prime.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9718395 + ... + 9737044.

Almost surely, 2^181421968675 is an apocalyptic number.

181421968675 is a deficient number, since it is larger than the sum of its proper divisors (44144402685).

181421968675 is a wasteful number, since it uses less digits than its factorization.

181421968675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19455822 (or 19455817 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 58.

The spelling of 181421968675 in words is "one hundred eighty-one billion, four hundred twenty-one million, nine hundred sixty-eight thousand, six hundred seventy-five".