12347077720 has 32 divisors (see below), whose sum is σ = 27803603520. Its totient is φ = 4934799360.

The previous prime is 12347077697. The next prime is 12347077733. The reversal of 12347077720 is 2777074321.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76137 + ... + 174616.

It is an arithmetic number, because the mean of its divisors is an integer number (868862610).

Almost surely, 2^12347077720 is an apocalyptic number.

12347077720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12347077720 is an abundant number, since it is smaller than the sum of its proper divisors (15456525800).

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

12347077720 is a wasteful number, since it uses less digits than its factorization.

12347077720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251995 (or 251991 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 40.

The spelling of 12347077720 in words is "twelve billion, three hundred forty-seven million, seventy-seven thousand, seven hundred twenty".