12133532540 has 12 divisors (see below), whose sum is σ = 25480418376. Its totient is φ = 4853413008.

The previous prime is 12133532531. The next prime is 12133532569. The reversal of 12133532540 is 4523533121.

It is a happy number.

It is a super-2 number, since 2×12133532540² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303338294 + ... + 303338333.

It is an arithmetic number, because the mean of its divisors is an integer number (2123368198).

Almost surely, 2^12133532540 is an apocalyptic number.

12133532540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12133532540 is an abundant number, since it is smaller than the sum of its proper divisors (13346885836).

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

12133532540 is a wasteful number, since it uses less digits than its factorization.

12133532540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606676636 (or 606676634 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 12133532540 in words is "twelve billion, one hundred thirty-three million, five hundred thirty-two thousand, five hundred forty".