161332580594 has 4 divisors (see below), whose sum is σ = 241998870894. Its totient is φ = 80666290296.

The previous prime is 161332580587. The next prime is 161332580603. The reversal of 161332580594 is 495085233161.

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

It can be written as a sum of positive squares in only one way, i.e., 157263799225 + 4068781369 = 396565^2 + 63787^2 .

It is a super-2 number, since 2×161332580594² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40333145147 + ... + 40333145150.

Almost surely, 2^161332580594 is an apocalyptic number.

161332580594 is a deficient number, since it is larger than the sum of its proper divisors (80666290300).

161332580594 is an equidigital number, since it uses as much as digits as its factorization.

161332580594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80666290299.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 161332580594 in words is "one hundred sixty-one billion, three hundred thirty-two million, five hundred eighty thousand, five hundred ninety-four".