12898137780 has 216 divisors, whose sum is σ = 43352365056. Its totient is φ = 3101535360.

The previous prime is 12898137757. The next prime is 12898137839. The reversal of 12898137780 is 8773189821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2763729 + ... + 2768391.

Almost surely, 2^12898137780 is an apocalyptic number.

12898137780 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 12898137780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21676182528).

12898137780 is an abundant number, since it is smaller than the sum of its proper divisors (30454227276).

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

12898137780 is a wasteful number, since it uses less digits than its factorization.

12898137780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4827 (or 4811 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 12898137780 in words is "twelve billion, eight hundred ninety-eight million, one hundred thirty-seven thousand, seven hundred eighty".