161669274274 has 8 divisors (see below), whose sum is σ = 243143764560. Its totient is φ = 80621352756.

The previous prime is 161669274251. The next prime is 161669274313. The reversal of 161669274274 is 472472966161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161669274274² (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, 106641244 + ... + 106642759.

It is an arithmetic number, because the mean of its divisors is an integer number (30392970570).

Almost surely, 2^161669274274 is an apocalyptic number.

161669274274 is a deficient number, since it is larger than the sum of its proper divisors (81474490286).

161669274274 is a wasteful number, since it uses less digits than its factorization.

161669274274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213284384.

The product of its digits is 6096384, while the sum is 55.

The spelling of 161669274274 in words is "one hundred sixty-one billion, six hundred sixty-nine million, two hundred seventy-four thousand, two hundred seventy-four".