12331550840 has 64 divisors (see below), whose sum is σ = 31941259200. Its totient is φ = 4197086208.

The previous prime is 12331550821. The next prime is 12331550849. The reversal of 12331550840 is 4805513321.

It is a super-2 number, since 2×12331550840² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12331550797 and 12331550806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331550849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122375 + ... + 199094.

It is an arithmetic number, because the mean of its divisors is an integer number (499082175).

Almost surely, 2^12331550840 is an apocalyptic number.

12331550840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331550840 is an abundant number, since it is smaller than the sum of its proper divisors (19609708360).

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

12331550840 is a wasteful number, since it uses less digits than its factorization.

12331550840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321624 (or 321620 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 12331550840 in words is "twelve billion, three hundred thirty-one million, five hundred fifty thousand, eight hundred forty".