161372510756 has 12 divisors (see below), whose sum is σ = 287031433500. Its totient is φ = 79363529760.

The previous prime is 161372510743. The next prime is 161372510801. The reversal of 161372510756 is 657015273161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87261160000 + 74111350756 = 295400^2 + 272234^2 .

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, 330681131 + ... + 330681618.

It is an arithmetic number, because the mean of its divisors is an integer number (23919286125).

Almost surely, 2^161372510756 is an apocalyptic number.

It is an amenable number.

161372510756 is a deficient number, since it is larger than the sum of its proper divisors (125658922744).

161372510756 is a wasteful number, since it uses less digits than its factorization.

161372510756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661362814 (or 661362812 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 161372510756 in words is "one hundred sixty-one billion, three hundred seventy-two million, five hundred ten thousand, seven hundred fifty-six".