12800747520 has 960 divisors, whose sum is σ = 53085352320. Its totient is φ = 2919628800.

The previous prime is 12800747503. The next prime is 12800747521. The reversal of 12800747520 is 2574700821.

12800747520 is a `hidden beast` number, since 12 + 80 + 0 + 7 + 47 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12800747521) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 209848290 + ... + 209848350.

It is an arithmetic number, because the mean of its divisors is an integer number (55297242).

Almost surely, 2^12800747520 is an apocalyptic number.

12800747520 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 12800747520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26542676160).

12800747520 is an abundant number, since it is smaller than the sum of its proper divisors (40284604800).

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

12800747520 is a wasteful number, since it uses less digits than its factorization.

12800747520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The spelling of 12800747520 in words is "twelve billion, eight hundred million, seven hundred forty-seven thousand, five hundred twenty".