535639309049 has 4 divisors (see below), whose sum is σ = 576842332836. Its totient is φ = 494436285264.

The previous prime is 535639308977. The next prime is 535639309061. The reversal of 535639309049 is 940903936535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940903936535 = 5 ⋅188180787307.

It can be written as a sum of positive squares in 2 ways, for example, as 70685793424 + 464953515625 = 265868^2 + 681875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-535639309049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 535639308985 and 535639309003.

It is not an unprimeable number, because it can be changed into a prime (535639309649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20601511874 + ... + 20601511899.

It is an arithmetic number, because the mean of its divisors is an integer number (144210583209).

Almost surely, 2^535639309049 is an apocalyptic number.

It is an amenable number.

535639309049 is a deficient number, since it is larger than the sum of its proper divisors (41203023787).

535639309049 is a wasteful number, since it uses less digits than its factorization.

535639309049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41203023786.

The product of its (nonzero) digits is 11809800, while the sum is 56.

The spelling of 535639309049 in words is "five hundred thirty-five billion, six hundred thirty-nine million, three hundred nine thousand, forty-nine".