51568969334 has 4 divisors (see below), whose sum is σ = 77353454004. Its totient is φ = 25784484666.

The previous prime is 51568969307. The next prime is 51568969337. The reversal of 51568969334 is 43396986515.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51568969337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12892242332 + ... + 12892242335.

It is an arithmetic number, because the mean of its divisors is an integer number (19338363501).

Almost surely, 2^51568969334 is an apocalyptic number.

51568969334 is a deficient number, since it is larger than the sum of its proper divisors (25784484670).

51568969334 is a wasteful number, since it uses less digits than its factorization.

51568969334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25784484669.

The product of its digits is 20995200, while the sum is 59.

The spelling of 51568969334 in words is "fifty-one billion, five hundred sixty-eight million, nine hundred sixty-nine thousand, three hundred thirty-four".