165119479991701 has 2 divisors, whose sum is σ = 165119479991702. Its totient is φ = 165119479991700.

The previous prime is 165119479991663. The next prime is 165119479991707. The reversal of 165119479991701 is 107199974911561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141719524969201 + 23399955022500 = 11904601^2 + 4837350^2 .

It is a cyclic number.

It is not a de Polignac number, because 165119479991701 - 2³¹ = 165117332508053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165119479991707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82559739995850 + 82559739995851.

It is an arithmetic number, because the mean of its divisors is an integer number (82559739995851).

Almost surely, 2^{165119479991701} is an apocalyptic number.

It is an amenable number.

165119479991701 is a deficient number, since it is larger than the sum of its proper divisors (1).

165119479991701 is an equidigital number, since it uses as much as digits as its factorization.

165119479991701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38578680, while the sum is 70.

The spelling of 165119479991701 in words is "one hundred sixty-five trillion, one hundred nineteen billion, four hundred seventy-nine million, nine hundred ninety-one thousand, seven hundred one".