12537737220 has 24 divisors (see below), whose sum is σ = 35105664384. Its totient is φ = 3343396576.

The previous prime is 12537737209. The next prime is 12537737227. The reversal of 12537737220 is 2273773521.

It is a happy number.

It is a super-3 number, since 3×12537737220³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12537737227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104481084 + ... + 104481203.

It is an arithmetic number, because the mean of its divisors is an integer number (1462736016).

Almost surely, 2^12537737220 is an apocalyptic number.

12537737220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12537737220 is an abundant number, since it is smaller than the sum of its proper divisors (22567927164).

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

12537737220 is a wasteful number, since it uses less digits than its factorization.

12537737220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208962299 (or 208962297 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 39.

The spelling of 12537737220 in words is "twelve billion, five hundred thirty-seven million, seven hundred thirty-seven thousand, two hundred twenty".