11500000115 has 16 divisors (see below), whose sum is σ = 15247061568. Its totient is φ = 8282351616.

The previous prime is 11500000103. The next prime is 11500000121. The reversal of 11500000115 is 51100000511.

It is a cyclic number.

It is not a de Polignac number, because 11500000115 - 2¹² = 11499996019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11500000115.

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, 2939222 + ... + 2943131.

It is an arithmetic number, because the mean of its divisors is an integer number (952941348).

Almost surely, 2^11500000115 is an apocalyptic number.

11500000115 is a deficient number, since it is larger than the sum of its proper divisors (3747061453).

11500000115 is a wasteful number, since it uses less digits than its factorization.

11500000115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882398.

The product of its (nonzero) digits is 25, while the sum is 14.

Adding to 11500000115 its reverse (51100000511), we get a palindrome (62600000626).

The spelling of 11500000115 in words is "eleven billion, five hundred million, one hundred fifteen", and thus it is an aban number.