12401512780 has 24 divisors (see below), whose sum is σ = 26045994240. Its totient is φ = 4960068480.

The previous prime is 12401512763. The next prime is 12401512861. The reversal of 12401512780 is 8721510421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193416 + ... + 249424.

It is an arithmetic number, because the mean of its divisors is an integer number (1085249760).

Almost surely, 2^12401512780 is an apocalyptic number.

12401512780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12401512780 is an abundant number, since it is smaller than the sum of its proper divisors (13644481460).

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

12401512780 is a wasteful number, since it uses less digits than its factorization.

12401512780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67089 (or 67087 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The spelling of 12401512780 in words is "twelve billion, four hundred one million, five hundred twelve thousand, seven hundred eighty".