15611642117 has 8 divisors (see below), whose sum is σ = 15818519040. Its totient is φ = 15404996880.

The previous prime is 15611642089. The next prime is 15611642143. The reversal of 15611642117 is 71124611651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15611642117 - 2³² = 11316674821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15611642177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79892 + ... + 193922.

It is an arithmetic number, because the mean of its divisors is an integer number (1977314880).

Almost surely, 2^15611642117 is an apocalyptic number.

It is an amenable number.

15611642117 is a deficient number, since it is larger than the sum of its proper divisors (206876923).

15611642117 is a wasteful number, since it uses less digits than its factorization.

15611642117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115843.

The product of its digits is 10080, while the sum is 35.

The spelling of 15611642117 in words is "fifteen billion, six hundred eleven million, six hundred forty-two thousand, one hundred seventeen".