42564067531 has 4 divisors (see below), whose sum is σ = 42590070432. Its totient is φ = 42538064632.

The previous prime is 42564067529. The next prime is 42564067603. The reversal of 42564067531 is 13576046524.

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

It is a cyclic number.

It is not a de Polignac number, because 42564067531 - 2¹ = 42564067529 is a prime.

It is a super-2 number, since 2×42564067531² (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 (42564062531) 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, 12998995 + ... + 13002268.

It is an arithmetic number, because the mean of its divisors is an integer number (10647517608).

Almost surely, 2^42564067531 is an apocalyptic number.

42564067531 is a deficient number, since it is larger than the sum of its proper divisors (26002901).

42564067531 is a wasteful number, since it uses less digits than its factorization.

42564067531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26002900.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 42564067531 in words is "forty-two billion, five hundred sixty-four million, sixty-seven thousand, five hundred thirty-one".