3216116615 has 4 divisors (see below), whose sum is σ = 3859339944. Its totient is φ = 2572893288.

The previous prime is 3216116591. The next prime is 3216116653. The reversal of 3216116615 is 5166116123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5166116123 = 7 ⋅738016589.

It is a cyclic number.

It is not a de Polignac number, because 3216116615 - 2²⁶ = 3149007751 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, 321611657 + ... + 321611666.

It is an arithmetic number, because the mean of its divisors is an integer number (964834986).

Almost surely, 2^3216116615 is an apocalyptic number.

3216116615 is a deficient number, since it is larger than the sum of its proper divisors (643223329).

3216116615 is an equidigital number, since it uses as much as digits as its factorization.

3216116615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643223328.

The product of its digits is 6480, while the sum is 32.

The square root of 3216116615 is about 56710.8156791983. The cubic root of 3216116615 is about 1476.0823793385.

The spelling of 3216116615 in words is "three billion, two hundred sixteen million, one hundred sixteen thousand, six hundred fifteen".