13646252377 has 2 divisors, whose sum is σ = 13646252378. Its totient is φ = 13646252376.

The previous prime is 13646252369. The next prime is 13646252387. The reversal of 13646252377 is 77325264631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11858992201 + 1787260176 = 108899^2 + 42276^2 .

It is a cyclic number.

It is not a de Polignac number, because 13646252377 - 2³ = 13646252369 is a prime.

It is not a weakly prime, because it can be changed into another prime (13646252317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6823126188 + 6823126189.

It is an arithmetic number, because the mean of its divisors is an integer number (6823126189).

Almost surely, 2^13646252377 is an apocalyptic number.

It is an amenable number.

13646252377 is a deficient number, since it is larger than the sum of its proper divisors (1).

13646252377 is an equidigital number, since it uses as much as digits as its factorization.

13646252377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 46.

The spelling of 13646252377 in words is "thirteen billion, six hundred forty-six million, two hundred fifty-two thousand, three hundred seventy-seven".