11315047218 has 32 divisors (see below), whose sum is σ = 23673513600. Its totient is φ = 3600702336.

The previous prime is 11315047147. The next prime is 11315047229. The reversal of 11315047218 is 81274051311.

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, 349846 + ... + 380817.

It is an arithmetic number, because the mean of its divisors is an integer number (739797300).

Almost surely, 2^11315047218 is an apocalyptic number.

11315047218 is an abundant number, since it is smaller than the sum of its proper divisors (12358466382).

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

11315047218 is a wasteful number, since it uses less digits than its factorization.

11315047218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730786.

The product of its (nonzero) digits is 6720, while the sum is 33.

Adding to 11315047218 its reverse (81274051311), we get a palindrome (92589098529).

The spelling of 11315047218 in words is "eleven billion, three hundred fifteen million, forty-seven thousand, two hundred eighteen".