13279220533 has 2 divisors, whose sum is σ = 13279220534. Its totient is φ = 13279220532.

The previous prime is 13279220503. The next prime is 13279220551. The reversal of 13279220533 is 33502297231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11693827044 + 1585393489 = 108138^2 + 39817^2 .

It is a cyclic number.

It is not a de Polignac number, because 13279220533 - 2⁵ = 13279220501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13279220492 and 13279220501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13279220503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6639610266 + 6639610267.

It is an arithmetic number, because the mean of its divisors is an integer number (6639610267).

Almost surely, 2^13279220533 is an apocalyptic number.

It is an amenable number.

13279220533 is a deficient number, since it is larger than the sum of its proper divisors (1).

13279220533 is an equidigital number, since it uses as much as digits as its factorization.

13279220533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 37.

The spelling of 13279220533 in words is "thirteen billion, two hundred seventy-nine million, two hundred twenty thousand, five hundred thirty-three".