12126546877 has 2 divisors, whose sum is σ = 12126546878. Its totient is φ = 12126546876.

The previous prime is 12126546853. The next prime is 12126546937. The reversal of 12126546877 is 77864562121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6207706521 + 5918840356 = 78789^2 + 76934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12126546877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12126546877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12126547877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6063273438 + 6063273439.

It is an arithmetic number, because the mean of its divisors is an integer number (6063273439).

Almost surely, 2^12126546877 is an apocalyptic number.

It is an amenable number.

12126546877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12126546877 is an equidigital number, since it uses as much as digits as its factorization.

12126546877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The spelling of 12126546877 in words is "twelve billion, one hundred twenty-six million, five hundred forty-six thousand, eight hundred seventy-seven".