161372396443 has 8 divisors (see below), whose sum is σ = 161630428160. Its totient is φ = 161114481000.

The previous prime is 161372396413. The next prime is 161372396467. The reversal of 161372396443 is 344693273161.

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

It is a cyclic number.

It is not a de Polignac number, because 161372396443 - 2⁵ = 161372396411 is a prime.

It is a super-3 number, since 3×161372396443³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161372396413) 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, 2997598 + ... + 3050956.

It is an arithmetic number, because the mean of its divisors is an integer number (20203803520).

Almost surely, 2^161372396443 is an apocalyptic number.

161372396443 is a deficient number, since it is larger than the sum of its proper divisors (258031717).

161372396443 is an equidigital number, since it uses as much as digits as its factorization.

161372396443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58137.

The product of its digits is 1959552, while the sum is 49.

The spelling of 161372396443 in words is "one hundred sixty-one billion, three hundred seventy-two million, three hundred ninety-six thousand, four hundred forty-three".