11512145500 has 24 divisors (see below), whose sum is σ = 25142526864. Its totient is φ = 4604858000.

The previous prime is 11512145473. The next prime is 11512145503. The reversal of 11512145500 is 554121511.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11512145503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11511646 + ... + 11512645.

It is an arithmetic number, because the mean of its divisors is an integer number (1047605286).

Almost surely, 2^11512145500 is an apocalyptic number.

11512145500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11512145500 is an abundant number, since it is smaller than the sum of its proper divisors (13630381364).

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

11512145500 is a wasteful number, since it uses less digits than its factorization.

11512145500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024310 (or 23024298 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

The spelling of 11512145500 in words is "eleven billion, five hundred twelve million, one hundred forty-five thousand, five hundred".