42551945263 has 4 divisors (see below), whose sum is σ = 42572336400. Its totient is φ = 42531554128.

The previous prime is 42551945221. The next prime is 42551945279. The reversal of 42551945263 is 36254915524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42551945263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42551945213) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 10192438 + ... + 10196611.

It is an arithmetic number, because the mean of its divisors is an integer number (10643084100).

Almost surely, 2^42551945263 is an apocalyptic number.

42551945263 is a deficient number, since it is larger than the sum of its proper divisors (20391137).

42551945263 is a wasteful number, since it uses less digits than its factorization.

42551945263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20391136.

The product of its digits is 1296000, while the sum is 46.

The spelling of 42551945263 in words is "forty-two billion, five hundred fifty-one million, nine hundred forty-five thousand, two hundred sixty-three".