161365047 has 8 divisors (see below), whose sum is σ = 215220720. Its totient is φ = 107543040.

The previous prime is 161365027. The next prime is 161365049. The reversal of 161365047 is 740563161.

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

It is not a de Polignac number, because 161365047 - 2¹⁹ = 160840759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161364999 and 161365017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161365049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6597 + ... + 19137.

It is an arithmetic number, because the mean of its divisors is an integer number (26902590).

Almost surely, 2^161365047 is an apocalyptic number.

161365047 is a deficient number, since it is larger than the sum of its proper divisors (53855673).

161365047 is a wasteful number, since it uses less digits than its factorization.

161365047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16833.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 161365047 is about 12702.9542626902. The cubic root of 161365047 is about 544.4230316335.

The spelling of 161365047 in words is "one hundred sixty-one million, three hundred sixty-five thousand, forty-seven".