42553627538 has 4 divisors (see below), whose sum is σ = 63830441310. Its totient is φ = 21276813768.

The previous prime is 42553627513. The next prime is 42553627559. The reversal of 42553627538 is 83572635524.

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

It can be written as a sum of positive squares in only one way, i.e., 37215425569 + 5338201969 = 192913^2 + 73063^2 .

It is a super-2 number, since 2×42553627538² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10638406883 + ... + 10638406886.

Almost surely, 2^42553627538 is an apocalyptic number.

42553627538 is a deficient number, since it is larger than the sum of its proper divisors (21276813772).

42553627538 is a wasteful number, since it uses less digits than its factorization.

42553627538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21276813771.

The product of its digits is 6048000, while the sum is 50.

The spelling of 42553627538 in words is "forty-two billion, five hundred fifty-three million, six hundred twenty-seven thousand, five hundred thirty-eight".