11125513512 has 64 divisors (see below), whose sum is σ = 30925800000. Its totient is φ = 3705913152.

The previous prime is 11125513501. The next prime is 11125513537. The reversal of 11125513512 is 21531552111.

It is a happy number.

11125513512 is a `hidden beast` number, since 11 + 125 + 5 + 13 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 305239 + ... + 339737.

It is an arithmetic number, because the mean of its divisors is an integer number (483215625).

Almost surely, 2^11125513512 is an apocalyptic number.

11125513512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11125513512 is an abundant number, since it is smaller than the sum of its proper divisors (19800286488).

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

11125513512 is a wasteful number, since it uses less digits than its factorization.

11125513512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36007 (or 35997 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The spelling of 11125513512 in words is "eleven billion, one hundred twenty-five million, five hundred thirteen thousand, five hundred twelve".