165156015611 has 2 divisors, whose sum is σ = 165156015612. Its totient is φ = 165156015610.

The previous prime is 165156015601. The next prime is 165156015671. The reversal of 165156015611 is 116510651561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165156015611 - 2⁶ = 165156015547 is a prime.

It is not a weakly prime, because it can be changed into another prime (165156015601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82578007805 + 82578007806.

It is an arithmetic number, because the mean of its divisors is an integer number (82578007806).

Almost surely, 2^165156015611 is an apocalyptic number.

165156015611 is a deficient number, since it is larger than the sum of its proper divisors (1).

165156015611 is an equidigital number, since it uses as much as digits as its factorization.

165156015611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 165156015611 in words is "one hundred sixty-five billion, one hundred fifty-six million, fifteen thousand, six hundred eleven".