188781051071 has 2 divisors, whose sum is σ = 188781051072. Its totient is φ = 188781051070.

The previous prime is 188781051061. The next prime is 188781051077. The reversal of 188781051071 is 170150187881.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 188781051071 - 2⁶ = 188781051007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188781051077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94390525535 + 94390525536.

It is an arithmetic number, because the mean of its divisors is an integer number (94390525536).

Almost surely, 2^188781051071 is an apocalyptic number.

188781051071 is a deficient number, since it is larger than the sum of its proper divisors (1).

188781051071 is an equidigital number, since it uses as much as digits as its factorization.

188781051071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125440, while the sum is 47.

The spelling of 188781051071 in words is "one hundred eighty-eight billion, seven hundred eighty-one million, fifty-one thousand, seventy-one".