13466778901 has 2 divisors, whose sum is σ = 13466778902. Its totient is φ = 13466778900.

The previous prime is 13466778847. The next prime is 13466778907. The reversal of 13466778901 is 10987766431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6970580100 + 6496198801 = 83490^2 + 80599^2 .

It is a cyclic number.

It is not a de Polignac number, because 13466778901 - 2⁹ = 13466778389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13466778907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6733389450 + 6733389451.

It is an arithmetic number, because the mean of its divisors is an integer number (6733389451).

Almost surely, 2^13466778901 is an apocalyptic number.

It is an amenable number.

13466778901 is a deficient number, since it is larger than the sum of its proper divisors (1).

13466778901 is an equidigital number, since it uses as much as digits as its factorization.

13466778901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 13466778901 in words is "thirteen billion, four hundred sixty-six million, seven hundred seventy-eight thousand, nine hundred one".