13122523240 has 16 divisors (see below), whose sum is σ = 29525677380. Its totient is φ = 5249009280.

The previous prime is 13122523199. The next prime is 13122523243. The reversal of 13122523240 is 4232522131.

It can be written as a sum of positive squares in 2 ways, for example, as 13120786116 + 1737124 = 114546^2 + 1318^2 .

It is not an unprimeable number, because it can be changed into a prime (13122523243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164031501 + ... + 164031580.

Almost surely, 2^13122523240 is an apocalyptic number.

13122523240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122523240 is an abundant number, since it is smaller than the sum of its proper divisors (16403154140).

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

13122523240 is a wasteful number, since it uses less digits than its factorization.

13122523240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328063092 (or 328063088 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 13122523240 in words is "thirteen billion, one hundred twenty-two million, five hundred twenty-three thousand, two hundred forty".