6661151115 has 16 divisors (see below), whose sum is σ = 10691470368. Its totient is φ = 3541404416.

The previous prime is 6661151087. The next prime is 6661151131. The reversal of 6661151115 is 5111511666.

It is a cyclic number.

It is not a de Polignac number, because 6661151115 - 2⁵ = 6661151083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695682 + ... + 705191.

It is an arithmetic number, because the mean of its divisors is an integer number (668216898).

Almost surely, 2^6661151115 is an apocalyptic number.

6661151115 is a deficient number, since it is larger than the sum of its proper divisors (4030319253).

6661151115 is a wasteful number, since it uses less digits than its factorization.

6661151115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401198.

The product of its digits is 5400, while the sum is 33.

The square root of 6661151115 is about 81615.8753858586. The cubic root of 6661151115 is about 1881.5528812747.

The spelling of 6661151115 in words is "six billion, six hundred sixty-one million, one hundred fifty-one thousand, one hundred fifteen".