13533310997 has 2 divisors, whose sum is σ = 13533310998. Its totient is φ = 13533310996.

The previous prime is 13533310993. The next prime is 13533311063. The reversal of 13533310997 is 79901333531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9421808356 + 4111502641 = 97066^2 + 64121^2 .

It is a cyclic number.

It is not a de Polignac number, because 13533310997 - 2² = 13533310993 is a prime.

It is a super-2 number, since 2×13533310997² (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 (13533310991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6766655498 + 6766655499.

It is an arithmetic number, because the mean of its divisors is an integer number (6766655499).

Almost surely, 2^13533310997 is an apocalyptic number.

It is an amenable number.

13533310997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13533310997 is an equidigital number, since it uses as much as digits as its factorization.

13533310997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 229635, while the sum is 44.

The spelling of 13533310997 in words is "thirteen billion, five hundred thirty-three million, three hundred ten thousand, nine hundred ninety-seven".