165157901439 has 8 divisors (see below), whose sum is σ = 220444556592. Its totient is φ = 109988256960.

The previous prime is 165157901393. The next prime is 165157901449. The reversal of 165157901439 is 934109751561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165157901439 - 2¹² = 165157897343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165157901391 and 165157901400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165157901449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29249374 + ... + 29255019.

It is an arithmetic number, because the mean of its divisors is an integer number (27555569574).

Almost surely, 2^165157901439 is an apocalyptic number.

165157901439 is a deficient number, since it is larger than the sum of its proper divisors (55286655153).

165157901439 is an equidigital number, since it uses as much as digits as its factorization.

165157901439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58505337.

The product of its (nonzero) digits is 1020600, while the sum is 51.

The spelling of 165157901439 in words is "one hundred sixty-five billion, one hundred fifty-seven million, nine hundred one thousand, four hundred thirty-nine".