161037322110719 has 4 divisors (see below), whose sum is σ = 161037364152600. Its totient is φ = 161037280068840.

The previous prime is 161037322110713. The next prime is 161037322110737. The reversal of 161037322110719 is 917011223730161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161037322110719 - 2⁴ = 161037322110703 is a prime.

It is a super-2 number, since 2×161037322110719² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161037322110719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161037322110713) 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, 14627069 + ... + 23152230.

It is an arithmetic number, because the mean of its divisors is an integer number (40259341038150).

Almost surely, 2^{161037322110719} is an apocalyptic number.

161037322110719 is a deficient number, since it is larger than the sum of its proper divisors (42041881).

161037322110719 is an equidigital number, since it uses as much as digits as its factorization.

161037322110719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42041880.

The product of its (nonzero) digits is 95256, while the sum is 44.

The spelling of 161037322110719 in words is "one hundred sixty-one trillion, thirty-seven billion, three hundred twenty-two million, one hundred ten thousand, seven hundred nineteen".