12232151540 has 24 divisors (see below), whose sum is σ = 29357164032. Its totient is φ = 4193880480.

The previous prime is 12232151537. The next prime is 12232151543. The reversal of 12232151540 is 4515123221.

It is an interprime number because it is at equal distance from previous prime (12232151537) and next prime (12232151543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232151543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43686116 + ... + 43686395.

It is an arithmetic number, because the mean of its divisors is an integer number (1223215168).

Almost surely, 2^12232151540 is an apocalyptic number.

12232151540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12232151540 is an abundant number, since it is smaller than the sum of its proper divisors (17125012492).

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

12232151540 is a wasteful number, since it uses less digits than its factorization.

12232151540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87372527 (or 87372525 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12232151540 its reverse (4515123221), we get a palindrome (16747274761).

The spelling of 12232151540 in words is "twelve billion, two hundred thirty-two million, one hundred fifty-one thousand, five hundred forty".