6615111101615 has 16 divisors (see below), whose sum is σ = 8008707639936. Its totient is φ = 5245241702400.

The previous prime is 6615111101593. The next prime is 6615111101659. The reversal of 6615111101615 is 5161011115166.

It is not a de Polignac number, because 6615111101615 - 2³⁰ = 6614037359791 is a prime.

It is a Duffinian number.

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, 12386156 + ... + 12909185.

It is an arithmetic number, because the mean of its divisors is an integer number (500544227496).

Almost surely, 2^{6615111101615} is an apocalyptic number.

6615111101615 is a deficient number, since it is larger than the sum of its proper divisors (1393596538321).

6615111101615 is a wasteful number, since it uses less digits than its factorization.

6615111101615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25295810.

The product of its (nonzero) digits is 5400, while the sum is 35.

The spelling of 6615111101615 in words is "six trillion, six hundred fifteen billion, one hundred eleven million, one hundred one thousand, six hundred fifteen".