12805290040 has 32 divisors (see below), whose sum is σ = 29590606080. Its totient is φ = 4983679872.

The previous prime is 12805290019. The next prime is 12805290053. The reversal of 12805290040 is 4009250821.

It is a junction number, because it is equal to n+sod(n) for n = 12805289984 and 12805290011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4324632 + ... + 4327591.

It is an arithmetic number, because the mean of its divisors is an integer number (924706440).

Almost surely, 2^12805290040 is an apocalyptic number.

12805290040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12805290040 is an abundant number, since it is smaller than the sum of its proper divisors (16785316040).

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

12805290040 is a wasteful number, since it uses less digits than its factorization.

12805290040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8652271 (or 8652267 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 12805290040 in words is "twelve billion, eight hundred five million, two hundred ninety thousand, forty".