12902538780 has 144 divisors (see below), whose sum is σ = 39695292000. Its totient is φ = 3392017920.

The previous prime is 12902538757. The next prime is 12902538833. The reversal of 12902538780 is 8783520921.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3726250 + ... + 3729710.

It is an arithmetic number, because the mean of its divisors is an integer number (275661750).

Almost surely, 2^12902538780 is an apocalyptic number.

12902538780 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 12902538780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19847646000).

12902538780 is an abundant number, since it is smaller than the sum of its proper divisors (26792753220).

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

12902538780 is a wasteful number, since it uses less digits than its factorization.

12902538780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3764 (or 3759 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 12902538780 in words is "twelve billion, nine hundred two million, five hundred thirty-eight thousand, seven hundred eighty".