12736401780 has 48 divisors (see below), whose sum is σ = 35720778240. Its totient is φ = 3390768768.

The previous prime is 12736401763. The next prime is 12736401787. The reversal of 12736401780 is 8710463721.

12736401780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12736401787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138435 + ... + 211274.

It is an arithmetic number, because the mean of its divisors is an integer number (744182880).

Almost surely, 2^12736401780 is an apocalyptic number.

12736401780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12736401780 is an abundant number, since it is smaller than the sum of its proper divisors (22984376460).

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

12736401780 is a wasteful number, since it uses less digits than its factorization.

12736401780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350328 (or 350326 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 12736401780 in words is "twelve billion, seven hundred thirty-six million, four hundred one thousand, seven hundred eighty".