161466215 has 4 divisors (see below), whose sum is σ = 193759464. Its totient is φ = 129172968.

The previous prime is 161466167. The next prime is 161466223. The reversal of 161466215 is 512664161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512664161 = 7331 ⋅69931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161466215 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 16146617 + ... + 16146626.

It is an arithmetic number, because the mean of its divisors is an integer number (48439866).

Almost surely, 2^161466215 is an apocalyptic number.

161466215 is a deficient number, since it is larger than the sum of its proper divisors (32293249).

161466215 is an equidigital number, since it uses as much as digits as its factorization.

161466215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32293248.

The product of its digits is 8640, while the sum is 32.

The square root of 161466215 is about 12706.9357045670. The cubic root of 161466215 is about 544.5367834111.

The spelling of 161466215 in words is "one hundred sixty-one million, four hundred sixty-six thousand, two hundred fifteen".