216161502 has 8 divisors (see below), whose sum is σ = 432323016. Its totient is φ = 72053832.

The previous prime is 216161501. The next prime is 216161503. The reversal of 216161502 is 205161612.

It is an interprime number because it is at equal distance from previous prime (216161501) and next prime (216161503).

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

216161502 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216161501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18013453 + ... + 18013464.

It is an arithmetic number, because the mean of its divisors is an integer number (54040377).

Almost surely, 2^216161502 is an apocalyptic number.

216161502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216161502 is a wasteful number, since it uses less digits than its factorization.

216161502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36026922.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 216161502 is about 14702.4318396652. The cubic root of 216161502 is about 600.1495016346.

The spelling of 216161502 in words is "two hundred sixteen million, one hundred sixty-one thousand, five hundred two".