15177870009 has 12 divisors (see below), whose sum is σ = 22017685716. Its totient is φ = 10075151232.

The previous prime is 15177869999. The next prime is 15177870013. The reversal of 15177870009 is 90007877151.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2253590784 + 12924279225 = 47472^2 + 113685^2 .

It is not a de Polignac number, because 15177870009 - 2⁷ = 15177869881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15177870049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3616852 + ... + 3621045.

It is an arithmetic number, because the mean of its divisors is an integer number (1834807143).

Almost surely, 2^15177870009 is an apocalyptic number.

It is an amenable number.

15177870009 is a deficient number, since it is larger than the sum of its proper divisors (6839815707).

15177870009 is a wasteful number, since it uses less digits than its factorization.

15177870009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238136 (or 7238133 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 45.

The spelling of 15177870009 in words is "fifteen billion, one hundred seventy-seven million, eight hundred seventy thousand, nine".