13553630635381 has 2 divisors, whose sum is σ = 13553630635382. Its totient is φ = 13553630635380.

The previous prime is 13553630635289. The next prime is 13553630635421. The reversal of 13553630635381 is 18353603635531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11038567684356 + 2515062951025 = 3322434^2 + 1585895^2 .

It is a cyclic number.

It is not a de Polignac number, because 13553630635381 - 2¹³ = 13553630627189 is a prime.

It is a super-2 number, since 2×13553630635381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13553630630381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776815317690 + 6776815317691.

It is an arithmetic number, because the mean of its divisors is an integer number (6776815317691).

Almost surely, 2^{13553630635381} is an apocalyptic number.

It is an amenable number.

13553630635381 is a deficient number, since it is larger than the sum of its proper divisors (1).

13553630635381 is an equidigital number, since it uses as much as digits as its factorization.

13553630635381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748000, while the sum is 52.

The spelling of 13553630635381 in words is "thirteen trillion, five hundred fifty-three billion, six hundred thirty million, six hundred thirty-five thousand, three hundred eighty-one".