12240178722 has 54 divisors (see below), whose sum is σ = 26913571347. Its totient is φ = 4020447552.

The previous prime is 12240178649. The next prime is 12240178729. The reversal of 12240178722 is 22787104221.

It can be written as a sum of positive squares in 5 ways, for example, as 8720011161 + 3520167561 = 93381^2 + 59331^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78231.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12240178729) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 41775208 + ... + 41775500.

Almost surely, 2^12240178722 is an apocalyptic number.

12240178722 is an abundant number, since it is smaller than the sum of its proper divisors (14673392625).

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

12240178722 is an frugal number, since it uses more digits than its factorization.

12240178722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

Multiplying 12240178722 by its product of nonzero digits (25088), we get a square (307081603777536 = 17523744²).

The spelling of 12240178722 in words is "twelve billion, two hundred forty million, one hundred seventy-eight thousand, seven hundred twenty-two".