188873781212 has 24 divisors (see below), whose sum is σ = 331006779936. Its totient is φ = 94300501568.

The previous prime is 188873781179. The next prime is 188873781223. The reversal of 188873781212 is 212187378881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10579958 + ... + 10597794.

It is an arithmetic number, because the mean of its divisors is an integer number (13791949164).

Almost surely, 2^188873781212 is an apocalyptic number.

It is an amenable number.

188873781212 is a deficient number, since it is larger than the sum of its proper divisors (142132998724).

188873781212 is a wasteful number, since it uses less digits than its factorization.

188873781212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21517 (or 21515 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 56.

The spelling of 188873781212 in words is "one hundred eighty-eight billion, eight hundred seventy-three million, seven hundred eighty-one thousand, two hundred twelve".