12895231477 has 2 divisors, whose sum is σ = 12895231478. Its totient is φ = 12895231476.

The previous prime is 12895231463. The next prime is 12895231499. The reversal of 12895231477 is 77413259821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9203332356 + 3691899121 = 95934^2 + 60761^2 .

It is a cyclic number.

It is not a de Polignac number, because 12895231477 - 2¹¹ = 12895229429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12895231477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12895231777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6447615738 + 6447615739.

It is an arithmetic number, because the mean of its divisors is an integer number (6447615739).

Almost surely, 2^12895231477 is an apocalyptic number.

It is an amenable number.

12895231477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12895231477 is an equidigital number, since it uses as much as digits as its factorization.

12895231477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The spelling of 12895231477 in words is "twelve billion, eight hundred ninety-five million, two hundred thirty-one thousand, four hundred seventy-seven".