11512500505 has 16 divisors (see below), whose sum is σ = 15077259648. Its totient is φ = 8369200000.

The previous prime is 11512500499. The next prime is 11512500511. The reversal of 11512500505 is 50500521511.

It is an interprime number because it is at equal distance from previous prime (11512500499) and next prime (11512500511).

It is not a de Polignac number, because 11512500505 - 2³ = 11512500497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11512500505.

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, 91380 + ... + 177130.

It is an arithmetic number, because the mean of its divisors is an integer number (942328728).

Almost surely, 2^11512500505 is an apocalyptic number.

It is an amenable number.

11512500505 is a deficient number, since it is larger than the sum of its proper divisors (3564759143).

11512500505 is a wasteful number, since it uses less digits than its factorization.

11512500505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88208.

The product of its (nonzero) digits is 1250, while the sum is 25.

The spelling of 11512500505 in words is "eleven billion, five hundred twelve million, five hundred thousand, five hundred five".