161026472674 has 4 divisors (see below), whose sum is σ = 241539709014. Its totient is φ = 80513236336.

The previous prime is 161026472641. The next prime is 161026472723. The reversal of 161026472674 is 476274620161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476274620161 = 1811 ⋅262989851.

It can be written as a sum of positive squares in only one way, i.e., 89787126025 + 71239346649 = 299645^2 + 266907^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40256618167 + ... + 40256618170.

Almost surely, 2^161026472674 is an apocalyptic number.

161026472674 is a deficient number, since it is larger than the sum of its proper divisors (80513236340).

161026472674 is an equidigital number, since it uses as much as digits as its factorization.

161026472674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80513236339.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 161026472674 in words is "one hundred sixty-one billion, twenty-six million, four hundred seventy-two thousand, six hundred seventy-four".