42251233634633 has 4 divisors (see below), whose sum is σ = 42387089691648. Its totient is φ = 42115377577620.

The previous prime is 42251233634591. The next prime is 42251233634671. The reversal of 42251233634633 is 33643633215224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42251233634633 - 2⁸ = 42251233634377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42251233634683) 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, 67928028041 + ... + 67928028662.

It is an arithmetic number, because the mean of its divisors is an integer number (10596772422912).

Almost surely, 2^{42251233634633} is an apocalyptic number.

It is an amenable number.

42251233634633 is a deficient number, since it is larger than the sum of its proper divisors (135856057015).

42251233634633 is a wasteful number, since it uses less digits than its factorization.

42251233634633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135856057014.

The product of its digits is 5598720, while the sum is 47.

Adding to 42251233634633 its reverse (33643633215224), we get a palindrome (75894866849857).

The spelling of 42251233634633 in words is "forty-two trillion, two hundred fifty-one billion, two hundred thirty-three million, six hundred thirty-four thousand, six hundred thirty-three".