42636830569 has 4 divisors (see below), whose sum is σ = 45144879444. Its totient is φ = 40128781696.

The previous prime is 42636830563. The next prime is 42636830597. The reversal of 42636830569 is 96503863624.

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 15703097344 + 26933733225 = 125312^2 + 164115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42636830569 is a prime.

It is a super-2 number, since 2×42636830569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42636830563) 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, 1254024412 + ... + 1254024445.

It is an arithmetic number, because the mean of its divisors is an integer number (11286219861).

Almost surely, 2^42636830569 is an apocalyptic number.

It is an amenable number.

42636830569 is a deficient number, since it is larger than the sum of its proper divisors (2508048875).

42636830569 is a wasteful number, since it uses less digits than its factorization.

42636830569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508048874.

The product of its (nonzero) digits is 5598720, while the sum is 52.

The spelling of 42636830569 in words is "forty-two billion, six hundred thirty-six million, eight hundred thirty thousand, five hundred sixty-nine".