51885233639 has 8 divisors (see below), whose sum is σ = 54941383728. Its totient is φ = 48829536640.

The previous prime is 51885233633. The next prime is 51885233689. The reversal of 51885233639 is 93633258815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51885233639 - 2¹⁶ = 51885168103 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 (51885233633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138509 + ... + 350649.

It is an arithmetic number, because the mean of its divisors is an integer number (6867672966).

Almost surely, 2^51885233639 is an apocalyptic number.

51885233639 is a deficient number, since it is larger than the sum of its proper divisors (3056150089).

51885233639 is a wasteful number, since it uses less digits than its factorization.

51885233639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226545.

The product of its digits is 4665600, while the sum is 53.

The spelling of 51885233639 in words is "fifty-one billion, eight hundred eighty-five million, two hundred thirty-three thousand, six hundred thirty-nine".