12800554787 has 4 divisors (see below), whose sum is σ = 13553528616. Its totient is φ = 12047580960.

The previous prime is 12800554769. The next prime is 12800554807. The reversal of 12800554787 is 78745500821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12800554787 - 2⁸ = 12800554531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12800554727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376486889 + ... + 376486922.

It is an arithmetic number, because the mean of its divisors is an integer number (3388382154).

Almost surely, 2^12800554787 is an apocalyptic number.

12800554787 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12800554787 is a deficient number, since it is larger than the sum of its proper divisors (752973829).

12800554787 is an equidigital number, since it uses as much as digits as its factorization.

12800554787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752973828.

The product of its (nonzero) digits is 627200, while the sum is 47.

The spelling of 12800554787 in words is "twelve billion, eight hundred million, five hundred fifty-four thousand, seven hundred eighty-seven".