12793421880 has 320 divisors, whose sum is σ = 44365860000. Its totient is φ = 3304488960.

The previous prime is 12793421869. The next prime is 12793421947. The reversal of 12793421880 is 8812439721.

It is a happy number.

12793421880 is a `hidden beast` number, since 127 + 9 + 342 + 188 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 25637871 + ... + 25638369.

Almost surely, 2^12793421880 is an apocalyptic number.

12793421880 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 12793421880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22182930000).

12793421880 is an abundant number, since it is smaller than the sum of its proper divisors (31572438120).

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

12793421880 is a wasteful number, since it uses less digits than its factorization.

12793421880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 12793421880 in words is "twelve billion, seven hundred ninety-three million, four hundred twenty-one thousand, eight hundred eighty".