12453385440 has 96 divisors (see below), whose sum is σ = 39354771456. Its totient is φ = 3310184960.

The previous prime is 12453385429. The next prime is 12453385459. The reversal of 12453385440 is 4458335421.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107569 + ... + 190991.

It is an arithmetic number, because the mean of its divisors is an integer number (409945536).

Almost surely, 2^12453385440 is an apocalyptic number.

12453385440 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 12453385440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19677385728).

12453385440 is an abundant number, since it is smaller than the sum of its proper divisors (26901386016).

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

12453385440 is a wasteful number, since it uses less digits than its factorization.

12453385440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83752 (or 83744 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 12453385440 in words is "twelve billion, four hundred fifty-three million, three hundred eighty-five thousand, four hundred forty".