12781588722 has 32 divisors (see below), whose sum is σ = 29260557312. Its totient is φ = 3646195344.

The previous prime is 12781588697. The next prime is 12781588739. The reversal of 12781588722 is 22788518721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209638 + ... + 263649.

It is an arithmetic number, because the mean of its divisors is an integer number (914392416).

Almost surely, 2^12781588722 is an apocalyptic number.

12781588722 is an abundant number, since it is smaller than the sum of its proper divisors (16478968590).

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

12781588722 is a wasteful number, since it uses less digits than its factorization.

12781588722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473942.

The product of its digits is 1003520, while the sum is 51.

The spelling of 12781588722 in words is "twelve billion, seven hundred eighty-one million, five hundred eighty-eight thousand, seven hundred twenty-two".