161362701604 has 24 divisors (see below), whose sum is σ = 304383954168. Its totient is φ = 74407176960.

The previous prime is 161362701571. The next prime is 161362701631. The reversal of 161362701604 is 406107263161.

It can be written as a sum of positive squares in 4 ways, for example, as 13754598400 + 147608103204 = 117280^2 + 384198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1357327 + ... + 1471414.

It is an arithmetic number, because the mean of its divisors is an integer number (12682664757).

Almost surely, 2^161362701604 is an apocalyptic number.

It is an amenable number.

161362701604 is a deficient number, since it is larger than the sum of its proper divisors (143021252564).

161362701604 is a wasteful number, since it uses less digits than its factorization.

161362701604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829855 (or 2829853 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

Adding to 161362701604 its reverse (406107263161), we get a palindrome (567469964765).

The spelling of 161362701604 in words is "one hundred sixty-one billion, three hundred sixty-two million, seven hundred one thousand, six hundred four".