161373546413 has 4 divisors (see below), whose sum is σ = 161468529600. Its totient is φ = 161278563228.

The previous prime is 161373546371. The next prime is 161373546419. The reversal of 161373546413 is 314645373161.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 314645373161 = 7 ⋅44949339023.

It is a cyclic number.

It is not a de Polignac number, because 161373546413 - 2⁶ = 161373546349 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 (161373546419) 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, 47489045 + ... + 47492442.

It is an arithmetic number, because the mean of its divisors is an integer number (40367132400).

Almost surely, 2^161373546413 is an apocalyptic number.

It is an amenable number.

161373546413 is a deficient number, since it is larger than the sum of its proper divisors (94983187).

161373546413 is an equidigital number, since it uses as much as digits as its factorization.

161373546413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94983186.

The product of its digits is 544320, while the sum is 44.

The spelling of 161373546413 in words is "one hundred sixty-one billion, three hundred seventy-three million, five hundred forty-six thousand, four hundred thirteen".