12340465877 has 2 divisors, whose sum is σ = 12340465878. Its totient is φ = 12340465876.

The previous prime is 12340465873. The next prime is 12340465939. The reversal of 12340465877 is 77856404321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12214891441 + 125574436 = 110521^2 + 11206^2 .

It is a cyclic number.

It is not a de Polignac number, because 12340465877 - 2² = 12340465873 is a prime.

It is a super-2 number, since 2×12340465877² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12340465873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170232938 + 6170232939.

It is an arithmetic number, because the mean of its divisors is an integer number (6170232939).

Almost surely, 2^12340465877 is an apocalyptic number.

It is an amenable number.

12340465877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340465877 is an equidigital number, since it uses as much as digits as its factorization.

12340465877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 12340465877 in words is "twelve billion, three hundred forty million, four hundred sixty-five thousand, eight hundred seventy-seven".