8515161181338 has 16 divisors (see below), whose sum is σ = 19463225557440. Its totient is φ = 2432903194656.

The previous prime is 8515161181337. The next prime is 8515161181361. The reversal of 8515161181338 is 8331811615158.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8515161181337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101370966403 + ... + 101370966486.

It is an arithmetic number, because the mean of its divisors is an integer number (1216451597340).

Almost surely, 2^{8515161181338} is an apocalyptic number.

8515161181338 is an abundant number, since it is smaller than the sum of its proper divisors (10948064376102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8515161181338 is a wasteful number, since it uses less digits than its factorization.

8515161181338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202741932901.

The product of its digits is 691200, while the sum is 51.

The spelling of 8515161181338 in words is "eight trillion, five hundred fifteen billion, one hundred sixty-one million, one hundred eighty-one thousand, three hundred thirty-eight".