12137642280 has 192 divisors, whose sum is σ = 40165070400. Its totient is φ = 3178137600.

The previous prime is 12137642249. The next prime is 12137642327. The reversal of 12137642280 is 8224673121.

It is a happy number.

12137642280 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 7 + 642 + 2 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10105680 + ... + 10106880.

It is an arithmetic number, because the mean of its divisors is an integer number (209193075).

Almost surely, 2^12137642280 is an apocalyptic number.

12137642280 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 12137642280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20082535200).

12137642280 is an abundant number, since it is smaller than the sum of its proper divisors (28027428120).

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

12137642280 is a wasteful number, since it uses less digits than its factorization.

12137642280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 12137642280 in words is "twelve billion, one hundred thirty-seven million, six hundred forty-two thousand, two hundred eighty".