12787340780 has 12 divisors (see below), whose sum is σ = 26853415680. Its totient is φ = 5114936304.

The previous prime is 12787340749. The next prime is 12787340833. The reversal of 12787340780 is 8704378721.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319683500 + ... + 319683539.

It is an arithmetic number, because the mean of its divisors is an integer number (2237784640).

Almost surely, 2^12787340780 is an apocalyptic number.

12787340780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12787340780 is an abundant number, since it is smaller than the sum of its proper divisors (14066074900).

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

12787340780 is a wasteful number, since it uses less digits than its factorization.

12787340780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639367048 (or 639367046 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 12787340780 in words is "twelve billion, seven hundred eighty-seven million, three hundred forty thousand, seven hundred eighty".