161123298586 has 8 divisors (see below), whose sum is σ = 242457105204. Its totient is φ = 80304263520.

The previous prime is 161123298569. The next prime is 161123298593. The reversal of 161123298586 is 685892321161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 153064825225 + 8058473361 = 391235^2 + 89769^2 .

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

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, 128692105 + ... + 128693356.

Almost surely, 2^161123298586 is an apocalyptic number.

161123298586 is a deficient number, since it is larger than the sum of its proper divisors (81333806618).

161123298586 is a wasteful number, since it uses less digits than its factorization.

161123298586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257385776.

The product of its digits is 1244160, while the sum is 52.

The spelling of 161123298586 in words is "one hundred sixty-one billion, one hundred twenty-three million, two hundred ninety-eight thousand, five hundred eighty-six".