12545622340 has 24 divisors (see below), whose sum is σ = 26777707992. Its totient is φ = 4935982080.

The previous prime is 12545622317. The next prime is 12545622359. The reversal of 12545622340 is 4322654521.

It can be written as a sum of positive squares in 4 ways, for example, as 245925124 + 12299697216 = 15682^2 + 110904^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12545622296 and 12545622305.

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, 5140429 + ... + 5142868.

It is an arithmetic number, because the mean of its divisors is an integer number (1115737833).

Almost surely, 2^12545622340 is an apocalyptic number.

12545622340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12545622340 is an abundant number, since it is smaller than the sum of its proper divisors (14232085652).

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

12545622340 is a wasteful number, since it uses less digits than its factorization.

12545622340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10283367 (or 10283365 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 12545622340 in words is "twelve billion, five hundred forty-five million, six hundred twenty-two thousand, three hundred forty".