12809062518780 has 96 divisors (see below), whose sum is σ = 39265102211328. Its totient is φ = 3094176601600.

The previous prime is 12809062518691. The next prime is 12809062518793. The reversal of 12809062518780 is 8781526090821.

It is a super-2 number, since 2×12809062518780² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12809062518780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34347762 + ... + 34718681.

It is an arithmetic number, because the mean of its divisors is an integer number (409011481368).

Almost surely, 2^{12809062518780} is an apocalyptic number.

12809062518780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12809062518780 is an abundant number, since it is smaller than the sum of its proper divisors (26456039692548).

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

12809062518780 is a wasteful number, since it uses less digits than its factorization.

12809062518780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69066747 (or 69066745 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 57.

The spelling of 12809062518780 in words is "twelve trillion, eight hundred nine billion, sixty-two million, five hundred eighteen thousand, seven hundred eighty".