13553788735631 has 2 divisors, whose sum is σ = 13553788735632. Its totient is φ = 13553788735630.

The previous prime is 13553788735573. The next prime is 13553788735699. The reversal of 13553788735631 is 13653788735531.

13553788735631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13553788735631 is a prime.

It is a super-2 number, since 2×13553788735631² (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 (13553788738631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776894367815 + 6776894367816.

It is an arithmetic number, because the mean of its divisors is an integer number (6776894367816).

Almost surely, 2^{13553788735631} is an apocalyptic number.

13553788735631 is a deficient number, since it is larger than the sum of its proper divisors (1).

13553788735631 is an equidigital number, since it uses as much as digits as its factorization.

13553788735631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512000, while the sum is 65.

The spelling of 13553788735631 in words is "thirteen trillion, five hundred fifty-three billion, seven hundred eighty-eight million, seven hundred thirty-five thousand, six hundred thirty-one".