165158456413 has 4 divisors (see below), whose sum is σ = 165552629760. Its totient is φ = 164764283068.

The previous prime is 165158456401. The next prime is 165158456429. The reversal of 165158456413 is 314654851561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165158456413 - 2²⁹ = 164621585501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165158453413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197086045 + ... + 197086882.

It is an arithmetic number, because the mean of its divisors is an integer number (41388157440).

Almost surely, 2^165158456413 is an apocalyptic number.

It is an amenable number.

165158456413 is a deficient number, since it is larger than the sum of its proper divisors (394173347).

165158456413 is an equidigital number, since it uses as much as digits as its factorization.

165158456413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394173346.

The product of its digits is 1728000, while the sum is 49.

The spelling of 165158456413 in words is "one hundred sixty-five billion, one hundred fifty-eight million, four hundred fifty-six thousand, four hundred thirteen".