12549496512 has 224 divisors, whose sum is σ = 38694481920. Its totient is φ = 3515581440.

The previous prime is 12549496507. The next prime is 12549496513. The reversal of 12549496512 is 21569494521.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×12549496512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (12549496513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33111939 + ... + 33112317.

Almost surely, 2^12549496512 is an apocalyptic number.

12549496512 is a gapful number since it is divisible by the number (12) 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 12549496512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19347240960).

12549496512 is an abundant number, since it is smaller than the sum of its proper divisors (26144985408).

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

12549496512 is a wasteful number, since it uses less digits than its factorization.

12549496512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819 (or 809 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The spelling of 12549496512 in words is "twelve billion, five hundred forty-nine million, four hundred ninety-six thousand, five hundred twelve".