12426173540 has 96 divisors (see below), whose sum is σ = 29325542400. Its totient is φ = 4383792000.

The previous prime is 12426173533. The next prime is 12426173581. The reversal of 12426173540 is 4537162421.

It is a super-2 number, since 2×12426173540² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12426173540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1424111 + ... + 1432809.

It is an arithmetic number, because the mean of its divisors is an integer number (305474400).

Almost surely, 2^12426173540 is an apocalyptic number.

12426173540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12426173540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14662771200).

12426173540 is an abundant number, since it is smaller than the sum of its proper divisors (16899368860).

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

12426173540 is a wasteful number, since it uses less digits than its factorization.

12426173540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8913 (or 8911 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 12426173540 in words is "twelve billion, four hundred twenty-six million, one hundred seventy-three thousand, five hundred forty".