42436749263 has 4 divisors (see below), whose sum is σ = 42442008768. Its totient is φ = 42431489760.

The previous prime is 42436749259. The next prime is 42436749269. The reversal of 42436749263 is 36294763424.

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 42436749263 - 2² = 42436749259 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 (42436749269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2617631 + ... + 2633792.

It is an arithmetic number, because the mean of its divisors is an integer number (10610502192).

Almost surely, 2^42436749263 is an apocalyptic number.

42436749263 is a deficient number, since it is larger than the sum of its proper divisors (5259505).

42436749263 is an equidigital number, since it uses as much as digits as its factorization.

42436749263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5259504.

The product of its digits is 5225472, while the sum is 50.

The spelling of 42436749263 in words is "forty-two billion, four hundred thirty-six million, seven hundred forty-nine thousand, two hundred sixty-three".