12151533140 has 96 divisors (see below), whose sum is σ = 26661519360. Its totient is φ = 4647081600.

The previous prime is 12151533133. The next prime is 12151533143. The reversal of 12151533140 is 4133515121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151533143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24748295 + ... + 24748785.

It is an arithmetic number, because the mean of its divisors is an integer number (277724160).

Almost surely, 2^12151533140 is an apocalyptic number.

12151533140 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 12151533140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13330759680).

12151533140 is an abundant number, since it is smaller than the sum of its proper divisors (14509986220).

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

12151533140 is a wasteful number, since it uses less digits than its factorization.

12151533140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 12151533140 in words is "twelve billion, one hundred fifty-one million, five hundred thirty-three thousand, one hundred forty".