161286174035794 has 4 divisors (see below), whose sum is σ = 241929261053694. Its totient is φ = 80643087017896.

The previous prime is 161286174035729. The next prime is 161286174035897. The reversal of 161286174035794 is 497530471682161.

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., 117344031177025 + 43942142858769 = 10832545^2 + 6628887^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40321543508947 + ... + 40321543508950.

It is a 1-persistent number, because it is pandigital, but 2⋅161286174035794 = 322572348071588 is not.

Almost surely, 2^{161286174035794} is an apocalyptic number.

161286174035794 is a deficient number, since it is larger than the sum of its proper divisors (80643087017900).

161286174035794 is an equidigital number, since it uses as much as digits as its factorization.

161286174035794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80643087017899.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 161286174035794 in words is "one hundred sixty-one trillion, two hundred eighty-six billion, one hundred seventy-four million, thirty-five thousand, seven hundred ninety-four".