12518776320 has 80 divisors (see below), whose sum is σ = 40020987600. Its totient is φ = 3338338304.

The previous prime is 12518776279. The next prime is 12518776327. The reversal of 12518776320 is 2367781521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12518776327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807345 + ... + 822704.

It is an arithmetic number, because the mean of its divisors is an integer number (500262345).

Almost surely, 2^12518776320 is an apocalyptic number.

12518776320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12518776320 is an abundant number, since it is smaller than the sum of its proper divisors (27502211280).

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

12518776320 is an equidigital number, since it uses as much as digits as its factorization.

12518776320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630075 (or 1630059 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 12518776320 in words is "twelve billion, five hundred eighteen million, seven hundred seventy-six thousand, three hundred twenty".