191880065711 has 2 divisors, whose sum is σ = 191880065712. Its totient is φ = 191880065710.

The previous prime is 191880065639. The next prime is 191880065717. The reversal of 191880065711 is 117560088191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191880065711 - 2³⁴ = 174700196527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191880065717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95940032855 + 95940032856.

It is an arithmetic number, because the mean of its divisors is an integer number (95940032856).

Almost surely, 2^191880065711 is an apocalyptic number.

191880065711 is a deficient number, since it is larger than the sum of its proper divisors (1).

191880065711 is an equidigital number, since it uses as much as digits as its factorization.

191880065711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 47.

The spelling of 191880065711 in words is "one hundred ninety-one billion, eight hundred eighty million, sixty-five thousand, seven hundred eleven".