12920750513280 has 192 divisors, whose sum is σ = 47241494422200. Its totient is φ = 3242855006208.

The previous prime is 12920750513267. The next prime is 12920750513287. The reversal of 12920750513280 is 8231505702921.

12920750513280 is a `hidden beast` number, since 1 + 2 + 9 + 2 + 0 + 7 + 50 + 513 + 2 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7654606756416 + 5266143756864 = 2766696^2 + 2294808^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12920750513287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65878135 + ... + 66073974.

Almost surely, 2^{12920750513280} is an apocalyptic number.

12920750513280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12920750513280 is an abundant number, since it is smaller than the sum of its proper divisors (34320743908920).

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

12920750513280 is a wasteful number, since it uses less digits than its factorization.

12920750513280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131952151 (or 131952136 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 12920750513280 in words is "twelve trillion, nine hundred twenty billion, seven hundred fifty million, five hundred thirteen thousand, two hundred eighty".