42575064637 has 4 divisors (see below), whose sum is σ = 48657216736. Its totient is φ = 36492912540.

The previous prime is 42575064613. The next prime is 42575064643. The reversal of 42575064637 is 73646057524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42575064637 - 2²³ = 42566676029 is a prime.

It is a super-2 number, since 2×42575064637² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42575064667) 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, 3041076039 + ... + 3041076052.

It is an arithmetic number, because the mean of its divisors is an integer number (12164304184).

Almost surely, 2^42575064637 is an apocalyptic number.

It is an amenable number.

42575064637 is a deficient number, since it is larger than the sum of its proper divisors (6082152099).

42575064637 is an equidigital number, since it uses as much as digits as its factorization.

42575064637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6082152098.

The product of its (nonzero) digits is 4233600, while the sum is 49.

The spelling of 42575064637 in words is "forty-two billion, five hundred seventy-five million, sixty-four thousand, six hundred thirty-seven".