12140347777 has 4 divisors (see below), whose sum is σ = 12140568916. Its totient is φ = 12140126640.

The previous prime is 12140347741. The next prime is 12140347789. The reversal of 12140347777 is 77774304121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11788747776 + 351600001 = 108576^2 + 18751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12140347777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12140147777) 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, 41443 + ... + 161239.

It is an arithmetic number, because the mean of its divisors is an integer number (3035142229).

Almost surely, 2^12140347777 is an apocalyptic number.

It is an amenable number.

12140347777 is a deficient number, since it is larger than the sum of its proper divisors (221139).

12140347777 is a wasteful number, since it uses less digits than its factorization.

12140347777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221138.

The product of its (nonzero) digits is 230496, while the sum is 43.

The spelling of 12140347777 in words is "twelve billion, one hundred forty million, three hundred forty-seven thousand, seven hundred seventy-seven".