533638879049 has 4 divisors (see below), whose sum is σ = 565029401364. Its totient is φ = 502248356736.

The previous prime is 533638879043. The next prime is 533638879057. The reversal of 533638879049 is 940978836335.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179685275449 + 353953603600 = 423893^2 + 594940^2 .

It is a cyclic number.

It is not a de Polignac number, because 533638879049 - 2⁸ = 533638878793 is a prime.

It is a super-2 number, since 2×533638879049² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (533638879043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15695261132 + ... + 15695261165.

It is an arithmetic number, because the mean of its divisors is an integer number (141257350341).

Almost surely, 2^533638879049 is an apocalyptic number.

It is an amenable number.

533638879049 is a deficient number, since it is larger than the sum of its proper divisors (31390522315).

533638879049 is a wasteful number, since it uses less digits than its factorization.

533638879049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31390522314.

The product of its (nonzero) digits is 117573120, while the sum is 65.

The spelling of 533638879049 in words is "five hundred thirty-three billion, six hundred thirty-eight million, eight hundred seventy-nine thousand, forty-nine".