161412972502319 has 4 divisors (see below), whose sum is σ = 161493719364000. Its totient is φ = 161332225640640.

The previous prime is 161412972502307. The next prime is 161412972502343. The reversal of 161412972502319 is 913205279214161.

It is a happy number.

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 161412972502319 - 2¹⁶ = 161412972436783 is a prime.

It is a super-2 number, since 2×161412972502319² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161412972502349) 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, 40373427842 + ... + 40373431839.

It is an arithmetic number, because the mean of its divisors is an integer number (40373429841000).

Almost surely, 2^{161412972502319} is an apocalyptic number.

161412972502319 is a deficient number, since it is larger than the sum of its proper divisors (80746861681).

161412972502319 is an equidigital number, since it uses as much as digits as its factorization.

161412972502319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80746861680.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 161412972502319 in words is "one hundred sixty-one trillion, four hundred twelve billion, nine hundred seventy-two million, five hundred two thousand, three hundred nineteen".