161050557337 has 4 divisors (see below), whose sum is σ = 169526902480. Its totient is φ = 152574212196.

The previous prime is 161050557329. The next prime is 161050557361. The reversal of 161050557337 is 733755050161.

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 161050557337 - 2³ = 161050557329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161050557293 and 161050557302.

It is not an unprimeable number, because it can be changed into a prime (161050557377) 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, 4238172543 + ... + 4238172580.

It is an arithmetic number, because the mean of its divisors is an integer number (42381725620).

Almost surely, 2^161050557337 is an apocalyptic number.

It is an amenable number.

161050557337 is a deficient number, since it is larger than the sum of its proper divisors (8476345143).

161050557337 is an equidigital number, since it uses as much as digits as its factorization.

161050557337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476345142.

The product of its (nonzero) digits is 330750, while the sum is 43.

The spelling of 161050557337 in words is "one hundred sixty-one billion, fifty million, five hundred fifty-seven thousand, three hundred thirty-seven".