188781051268 has 12 divisors (see below), whose sum is σ = 330826325760. Its totient is φ = 94259243912.

The previous prime is 188781051253. The next prime is 188781051269. The reversal of 188781051268 is 862150187881.

It is not an unprimeable number, because it can be changed into a prime (188781051269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32817196 + ... + 32822947.

It is an arithmetic number, because the mean of its divisors is an integer number (27568860480).

Almost surely, 2^188781051268 is an apocalyptic number.

It is an amenable number.

188781051268 is a deficient number, since it is larger than the sum of its proper divisors (142045274492).

188781051268 is a wasteful number, since it uses less digits than its factorization.

188781051268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65640866 (or 65640864 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 55.

The spelling of 188781051268 in words is "one hundred eighty-eight billion, seven hundred eighty-one million, fifty-one thousand, two hundred sixty-eight".