161382520222 has 32 divisors (see below), whose sum is σ = 314928290304. Its totient is φ = 60142552800.

The previous prime is 161382520171. The next prime is 161382520231. The reversal of 161382520222 is 222025283161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22777729 + ... + 22784812.

It is an arithmetic number, because the mean of its divisors is an integer number (9841509072).

Almost surely, 2^161382520222 is an apocalyptic number.

161382520222 is a deficient number, since it is larger than the sum of its proper divisors (153545770082).

161382520222 is a wasteful number, since it uses less digits than its factorization.

161382520222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45562584.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 161382520222 in words is "one hundred sixty-one billion, three hundred eighty-two million, five hundred twenty thousand, two hundred twenty-two".