42553640431 has 4 divisors (see below), whose sum is σ = 42755316664. Its totient is φ = 42351964200.

The previous prime is 42553640369. The next prime is 42553640447. The reversal of 42553640431 is 13404635524.

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 42553640431 - 2²⁵ = 42520085999 is a prime.

It is a super-2 number, since 2×42553640431² (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 (42553670431) 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, 100837800 + ... + 100838221.

It is an arithmetic number, because the mean of its divisors is an integer number (10688829166).

Almost surely, 2^42553640431 is an apocalyptic number.

42553640431 is a deficient number, since it is larger than the sum of its proper divisors (201676233).

42553640431 is a wasteful number, since it uses less digits than its factorization.

42553640431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201676232.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 42553640431 in words is "forty-two billion, five hundred fifty-three million, six hundred forty thousand, four hundred thirty-one".