6155555516 has 12 divisors (see below), whose sum is σ = 11751515160. Its totient is φ = 2797979760.

The previous prime is 6155555509. The next prime is 6155555519.

6155555516 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 139898989 = 6155555516 / (6 + 1 + 5 + 5 + 5 + 5 + 5 + 5 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6155555519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69949451 + ... + 69949538.

It is an arithmetic number, because the mean of its divisors is an integer number (979292930).

Almost surely, 2^6155555516 is an apocalyptic number.

It is an amenable number.

6155555516 is a deficient number, since it is larger than the sum of its proper divisors (5595959644).

6155555516 is a wasteful number, since it uses less digits than its factorization.

6155555516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139899004 (or 139899002 counting only the distinct ones).

The product of its digits is 562500, while the sum is 44.

The square root of 6155555516 is about 78457.3483875156. The cubic root of 6155555516 is about 1832.6903123526.

The spelling of 6155555516 in words is "six billion, one hundred fifty-five million, five hundred fifty-five thousand, five hundred sixteen".