12800067720 has 128 divisors (see below), whose sum is σ = 44355392640. Its totient is φ = 2920509440.

The previous prime is 12800067701. The next prime is 12800067739. The reversal of 12800067720 is 2776000821.

It is an interprime number because it is at equal distance from previous prime (12800067701) and next prime (12800067739).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262767 + ... + 307646.

It is an arithmetic number, because the mean of its divisors is an integer number (346526505).

Almost surely, 2^12800067720 is an apocalyptic number.

12800067720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12800067720 is an abundant number, since it is smaller than the sum of its proper divisors (31555324920).

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

12800067720 is a wasteful number, since it uses less digits than its factorization.

12800067720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570455 (or 570451 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 12800067720 in words is "twelve billion, eight hundred million, sixty-seven thousand, seven hundred twenty".