51993905833 has 8 divisors (see below), whose sum is σ = 55055499552. Its totient is φ = 48932659776.

The previous prime is 51993905807. The next prime is 51993905851. The reversal of 51993905833 is 33850939915.

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 51993905833 - 2¹⁷ = 51993774761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51993905933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260766 + ... + 414712.

It is an arithmetic number, because the mean of its divisors is an integer number (6881937444).

Almost surely, 2^51993905833 is an apocalyptic number.

It is an amenable number.

51993905833 is a deficient number, since it is larger than the sum of its proper divisors (3061593719).

51993905833 is a wasteful number, since it uses less digits than its factorization.

51993905833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173831.

The product of its (nonzero) digits is 3936600, while the sum is 55.

The spelling of 51993905833 in words is "fifty-one billion, nine hundred ninety-three million, nine hundred five thousand, eight hundred thirty-three".