12451987548 has 576 divisors, whose sum is σ = 45012136960. Its totient is φ = 2894538240.

The previous prime is 12451987547. The next prime is 12451987577. The reversal of 12451987548 is 84578915421.

12451987548 is a `hidden beast` number, since 1 + 2 + 4 + 5 + 1 + 98 + 7 + 548 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 12451987494 and 12451987503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12451987547) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 43999815 + ... + 44000097.

Almost surely, 2^12451987548 is an apocalyptic number.

12451987548 is a gapful number since it is divisible by the number (18) 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 12451987548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22506068480).

12451987548 is an abundant number, since it is smaller than the sum of its proper divisors (32560149412).

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

12451987548 is a wasteful number, since it uses less digits than its factorization.

12451987548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 356 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

It can be divided in two parts, 12451 and 987548, that added together give a palindrome (999999).

The spelling of 12451987548 in words is "twelve billion, four hundred fifty-one million, nine hundred eighty-seven thousand, five hundred forty-eight".