13425870040 has 128 divisors (see below), whose sum is σ = 34902213120. Its totient is φ = 4599936000.

The previous prime is 13425870001. The next prime is 13425870077. The reversal of 13425870040 is 4007852431.

It is a junction number, because it is equal to n+sod(n) for n = 13425869978 and 13425870005.

It is a congruent number.

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, 668140 + ... + 687940.

It is an arithmetic number, because the mean of its divisors is an integer number (272673540).

Almost surely, 2^13425870040 is an apocalyptic number.

13425870040 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 13425870040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17451106560).

13425870040 is an abundant number, since it is smaller than the sum of its proper divisors (21476343080).

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

13425870040 is a wasteful number, since it uses less digits than its factorization.

13425870040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19913 (or 19909 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 13425870040 in words is "thirteen billion, four hundred twenty-five million, eight hundred seventy thousand, forty".