52242643651 has 4 divisors (see below), whose sum is σ = 56991974904. Its totient is φ = 47493312400.

The previous prime is 52242643619. The next prime is 52242643657. The reversal of 52242643651 is 15634624225.

It is a happy number.

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 52242643651 - 2⁵ = 52242643619 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52242643657) 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, 2374665610 + ... + 2374665631.

It is an arithmetic number, because the mean of its divisors is an integer number (14247993726).

Almost surely, 2^52242643651 is an apocalyptic number.

52242643651 is a deficient number, since it is larger than the sum of its proper divisors (4749331253).

52242643651 is a wasteful number, since it uses less digits than its factorization.

52242643651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749331252.

The product of its digits is 345600, while the sum is 40.

The spelling of 52242643651 in words is "fifty-two billion, two hundred forty-two million, six hundred forty-three thousand, six hundred fifty-one".