161579080966 has 4 divisors (see below), whose sum is σ = 242368621452. Its totient is φ = 80789540482.

The previous prime is 161579080939. The next prime is 161579081011. The reversal of 161579080966 is 669080975161.

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

It is a super-2 number, since 2×161579080966² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 161579080966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40394770240 + ... + 40394770243.

It is an arithmetic number, because the mean of its divisors is an integer number (60592155363).

Almost surely, 2^161579080966 is an apocalyptic number.

161579080966 is a deficient number, since it is larger than the sum of its proper divisors (80789540486).

161579080966 is an equidigital number, since it uses as much as digits as its factorization.

161579080966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80789540485.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 161579080966 in words is "one hundred sixty-one billion, five hundred seventy-nine million, eighty thousand, nine hundred sixty-six".