52351810642 has 4 divisors (see below), whose sum is σ = 78527715966. Its totient is φ = 26175905320.

The previous prime is 52351810639. The next prime is 52351810649. The reversal of 52351810642 is 24601815325.

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

It can be written as a sum of positive squares in only one way, i.e., 52322445081 + 29365561 = 228741^2 + 5419^2 .

It is not an unprimeable number, because it can be changed into a prime (52351810649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13087952659 + ... + 13087952662.

Almost surely, 2^52351810642 is an apocalyptic number.

52351810642 is a deficient number, since it is larger than the sum of its proper divisors (26175905324).

52351810642 is a wasteful number, since it uses less digits than its factorization.

52351810642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26175905323.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 52351810642 in words is "fifty-two billion, three hundred fifty-one million, eight hundred ten thousand, six hundred forty-two".