12524459640 has 512 divisors, whose sum is σ = 50343690240. Its totient is φ = 2412748800.

The previous prime is 12524459639. The next prime is 12524459663. The reversal of 12524459640 is 4695442521.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 12524459592 and 12524459601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11152119 + ... + 11153241.

It is an arithmetic number, because the mean of its divisors is an integer number (98327520).

Almost surely, 2^12524459640 is an apocalyptic number.

12524459640 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 12524459640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25171845120).

12524459640 is an abundant number, since it is smaller than the sum of its proper divisors (37819230600).

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

12524459640 is a wasteful number, since it uses less digits than its factorization.

12524459640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 12524459640 in words is "twelve billion, five hundred twenty-four million, four hundred fifty-nine thousand, six hundred forty".