162868117091 has 2 divisors, whose sum is σ = 162868117092. Its totient is φ = 162868117090.

The previous prime is 162868116989. The next prime is 162868117117. The reversal of 162868117091 is 190711868261.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162868117091 is a prime.

It is not a weakly prime, because it can be changed into another prime (162868117691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81434058545 + 81434058546.

It is an arithmetic number, because the mean of its divisors is an integer number (81434058546).

Almost surely, 2^162868117091 is an apocalyptic number.

162868117091 is a deficient number, since it is larger than the sum of its proper divisors (1).

162868117091 is an equidigital number, since it uses as much as digits as its factorization.

162868117091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 162868117091 in words is "one hundred sixty-two billion, eight hundred sixty-eight million, one hundred seventeen thousand, ninety-one".