6116661551 has 16 divisors (see below), whose sum is σ = 8212581888. Its totient is φ = 4399596000.

The previous prime is 6116661539. The next prime is 6116661581. The reversal of 6116661551 is 1551666116.

6116661551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6116661551 - 2²⁶ = 6049552687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6116661521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3054275 + ... + 3056276.

It is an arithmetic number, because the mean of its divisors is an integer number (513286368).

Almost surely, 2^6116661551 is an apocalyptic number.

6116661551 is a deficient number, since it is larger than the sum of its proper divisors (2095920337).

6116661551 is a wasteful number, since it uses less digits than its factorization.

6116661551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110582.

The product of its digits is 32400, while the sum is 38.

The square root of 6116661551 is about 78209.0886726089. The cubic root of 6116661551 is about 1828.8221940297.

The spelling of 6116661551 in words is "six billion, one hundred sixteen million, six hundred sixty-one thousand, five hundred fifty-one".