13121302477 has 2 divisors, whose sum is σ = 13121302478. Its totient is φ = 13121302476.

The previous prime is 13121302373. The next prime is 13121302501. The reversal of 13121302477 is 77420312131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12876348676 + 244953801 = 113474^2 + 15651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121302477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121302277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560651238 + 6560651239.

It is an arithmetic number, because the mean of its divisors is an integer number (6560651239).

Almost surely, 2^13121302477 is an apocalyptic number.

It is an amenable number.

13121302477 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121302477 is an equidigital number, since it uses as much as digits as its factorization.

13121302477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 13121302477 in words is "thirteen billion, one hundred twenty-one million, three hundred two thousand, four hundred seventy-seven".