12546491504 has 80 divisors (see below), whose sum is σ = 26023780800. Its totient is φ = 5839257600.

The previous prime is 12546491501. The next prime is 12546491519. The reversal of 12546491504 is 40519464521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12546491501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10446104 + ... + 10447304.

It is an arithmetic number, because the mean of its divisors is an integer number (325297260).

Almost surely, 2^12546491504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12546491504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13011890400).

12546491504 is an abundant number, since it is smaller than the sum of its proper divisors (13477289296).

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

12546491504 is a wasteful number, since it uses less digits than its factorization.

12546491504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 12546491504 in words is "twelve billion, five hundred forty-six million, four hundred ninety-one thousand, five hundred four".