161624370304 has 32 divisors (see below), whose sum is σ = 322006110300. Its totient is φ = 80807150592.

The previous prime is 161624370293. The next prime is 161624370311. The reversal of 161624370304 is 403073426161.

It can be written as a sum of positive squares in 2 ways, for example, as 154097072704 + 7527297600 = 392552^2 + 86760^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×161624370304² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2847934 + ... + 2904130.

Almost surely, 2^161624370304 is an apocalyptic number.

It is an amenable number.

161624370304 is a deficient number, since it is larger than the sum of its proper divisors (160381739996).

161624370304 is an equidigital number, since it uses as much as digits as its factorization.

161624370304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78680 (or 78668 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

Adding to 161624370304 its reverse (403073426161), we get a palindrome (564697796465).

The spelling of 161624370304 in words is "one hundred sixty-one billion, six hundred twenty-four million, three hundred seventy thousand, three hundred four".