15161666117 has 8 divisors (see below), whose sum is σ = 16890981240. Its totient is φ = 13512784320.

The previous prime is 15161666101. The next prime is 15161666119. The reversal of 15161666117 is 71166616151.

15161666117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 69789316 + 15091876801 = 8354^2 + 122849^2 .

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

It is not a de Polignac number, because 15161666117 - 2⁴ = 15161666101 is a prime.

It is a super-2 number, since 2×15161666117² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15161666119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20107934 + ... + 20108687.

It is an arithmetic number, because the mean of its divisors is an integer number (2111372655).

Almost surely, 2^15161666117 is an apocalyptic number.

It is an amenable number.

15161666117 is a deficient number, since it is larger than the sum of its proper divisors (1729315123).

15161666117 is a wasteful number, since it uses less digits than its factorization.

15161666117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40216663.

The product of its digits is 45360, while the sum is 41.

The spelling of 15161666117 in words is "fifteen billion, one hundred sixty-one million, six hundred sixty-six thousand, one hundred seventeen".