6615645055 has 16 divisors (see below), whose sum is σ = 8626176000. Its totient is φ = 4852219680.

The previous prime is 6615645041. The next prime is 6615645083. The reversal of 6615645055 is 5505465166.

It is not a de Polignac number, because 6615645055 - 2³¹ = 4468161407 is a prime.

It is a congruent number.

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, 1120255 + ... + 1126144.

It is an arithmetic number, because the mean of its divisors is an integer number (539136000).

Almost surely, 2^6615645055 is an apocalyptic number.

6615645055 is a deficient number, since it is larger than the sum of its proper divisors (2010530945).

6615645055 is a wasteful number, since it uses less digits than its factorization.

6615645055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246454.

The product of its (nonzero) digits is 540000, while the sum is 43.

The square root of 6615645055 is about 81336.6157090397. The cubic root of 6615645055 is about 1877.2584393857.

The spelling of 6615645055 in words is "six billion, six hundred fifteen million, six hundred forty-five thousand, fifty-five".