12777323800 has 24 divisors (see below), whose sum is σ = 29707278300. Its totient is φ = 5110929440.

The previous prime is 12777323789. The next prime is 12777323803. The reversal of 12777323800 is 832377721.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12777323803) 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 5 ways as a sum of consecutive naturals, for example, 31943110 + ... + 31943509.

Almost surely, 2^12777323800 is an apocalyptic number.

12777323800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12777323800 is an abundant number, since it is smaller than the sum of its proper divisors (16929954500).

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

12777323800 is a wasteful number, since it uses less digits than its factorization.

12777323800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63886635 (or 63886626 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 12777323800 in words is "twelve billion, seven hundred seventy-seven million, three hundred twenty-three thousand, eight hundred".