11313551533 has 2 divisors, whose sum is σ = 11313551534. Its totient is φ = 11313551532.

The previous prime is 11313551503. The next prime is 11313551551. The reversal of 11313551533 is 33515531311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11097990409 + 215561124 = 105347^2 + 14682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11313551533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11313551495 and 11313551504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11313551503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656775766 + 5656775767.

It is an arithmetic number, because the mean of its divisors is an integer number (5656775767).

Almost surely, 2^11313551533 is an apocalyptic number.

It is an amenable number.

11313551533 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313551533 is an equidigital number, since it uses as much as digits as its factorization.

11313551533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10125, while the sum is 31.

The spelling of 11313551533 in words is "eleven billion, three hundred thirteen million, five hundred fifty-one thousand, five hundred thirty-three".