42626530191 has 72 divisors (see below), whose sum is σ = 70848150912. Its totient is φ = 22327812000.

The previous prime is 42626530189. The next prime is 42626530211. The reversal of 42626530191 is 19103562624.

It is not a de Polignac number, because 42626530191 - 2¹ = 42626530189 is a prime.

It is a super-2 number, since 2×42626530191² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42626530181) 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 71 ways as a sum of consecutive naturals, for example, 7282416 + ... + 7288266.

It is an arithmetic number, because the mean of its divisors is an integer number (984002096).

Almost surely, 2^42626530191 is an apocalyptic number.

42626530191 is a deficient number, since it is larger than the sum of its proper divisors (28221620721).

42626530191 is a wasteful number, since it uses less digits than its factorization.

42626530191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5961 (or 5911 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 42626530191 in words is "forty-two billion, six hundred twenty-six million, five hundred thirty thousand, one hundred ninety-one".