42524646569 has 4 divisors (see below), whose sum is σ = 42628619220. Its totient is φ = 42420673920.

The previous prime is 42524646523. The next prime is 42524646589. The reversal of 42524646569 is 96564642524.

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 39481690000 + 3042956569 = 198700^2 + 55163^2 .

It is a cyclic number.

It is not a de Polignac number, because 42524646569 - 2¹² = 42524642473 is a prime.

It is a super-2 number, since 2×42524646569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42524646569.

It is not an unprimeable number, because it can be changed into a prime (42524646589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51985712 + ... + 51986529.

It is an arithmetic number, because the mean of its divisors is an integer number (10657154805).

Almost surely, 2^42524646569 is an apocalyptic number.

It is an amenable number.

42524646569 is a deficient number, since it is larger than the sum of its proper divisors (103972651).

42524646569 is a wasteful number, since it uses less digits than its factorization.

42524646569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103972650.

The product of its digits is 12441600, while the sum is 53.

The spelling of 42524646569 in words is "forty-two billion, five hundred twenty-four million, six hundred forty-six thousand, five hundred sixty-nine".