13642266461 has 2 divisors, whose sum is σ = 13642266462. Its totient is φ = 13642266460.

The previous prime is 13642266457. The next prime is 13642266523. The reversal of 13642266461 is 16466224631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13640838436 + 1428025 = 116794^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 13642266461 - 2² = 13642266457 is a prime.

It is a super-2 number, since 2×13642266461² (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 (13642266761) 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, 6821133230 + 6821133231.

It is an arithmetic number, because the mean of its divisors is an integer number (6821133231).

Almost surely, 2^13642266461 is an apocalyptic number.

It is an amenable number.

13642266461 is a deficient number, since it is larger than the sum of its proper divisors (1).

13642266461 is an equidigital number, since it uses as much as digits as its factorization.

13642266461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 41.

The spelling of 13642266461 in words is "thirteen billion, six hundred forty-two million, two hundred sixty-six thousand, four hundred sixty-one".