6615161145 has 96 divisors (see below), whose sum is σ = 12373171200. Its totient is φ = 3261888000.

The previous prime is 6615161131. The next prime is 6615161167. The reversal of 6615161145 is 5411615166.

It is not a de Polignac number, because 6615161145 - 2¹³ = 6615152953 is a prime.

It is a super-2 number, since 2×6615161145² = 87520713948635422050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4085146 + ... + 4086764.

It is an arithmetic number, because the mean of its divisors is an integer number (128887200).

Almost surely, 2^6615161145 is an apocalyptic number.

It is an amenable number.

6615161145 is a deficient number, since it is larger than the sum of its proper divisors (5758010055).

6615161145 is a wasteful number, since it uses less digits than its factorization.

6615161145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 1788 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 6615161145 is about 81333.6409181342. The cubic root of 6615161145 is about 1877.2126667626.

The spelling of 6615161145 in words is "six billion, six hundred fifteen million, one hundred sixty-one thousand, one hundred forty-five".