161064274274 has 4 divisors (see below), whose sum is σ = 241596411414. Its totient is φ = 80532137136.

The previous prime is 161064274243. The next prime is 161064274307. The reversal of 161064274274 is 472472460161.

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

It can be written as a sum of positive squares in only one way, i.e., 147884086249 + 13180188025 = 384557^2 + 114805^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40266068567 + ... + 40266068570.

Almost surely, 2^161064274274 is an apocalyptic number.

161064274274 is a deficient number, since it is larger than the sum of its proper divisors (80532137140).

161064274274 is an equidigital number, since it uses as much as digits as its factorization.

161064274274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80532137139.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 161064274274 in words is "one hundred sixty-one billion, sixty-four million, two hundred seventy-four thousand, two hundred seventy-four".