12154534000 has 160 divisors (see below), whose sum is σ = 35049470976. Its totient is φ = 3985977600.

The previous prime is 12154533973. The next prime is 12154534037. The reversal of 12154534000 is 43545121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303127 + ... + 340873.

Almost surely, 2^12154534000 is an apocalyptic number.

12154534000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154534000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17524735488).

12154534000 is an abundant number, since it is smaller than the sum of its proper divisors (22894936976).

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

12154534000 is a wasteful number, since it uses less digits than its factorization.

12154534000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37800 (or 37784 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 12154534000 in words is "twelve billion, one hundred fifty-four million, five hundred thirty-four thousand".