51889661773 has 8 divisors (see below), whose sum is σ = 55033370496. Its totient is φ = 48819922800.

The previous prime is 51889661711. The next prime is 51889661783. The reversal of 51889661773 is 37716698815.

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 51889661773 - 2²⁵ = 51856107341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51889661783) 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, 18490993 + ... + 18493798.

It is an arithmetic number, because the mean of its divisors is an integer number (6879171312).

Almost surely, 2^51889661773 is an apocalyptic number.

It is an amenable number.

51889661773 is a deficient number, since it is larger than the sum of its proper divisors (3143708723).

51889661773 is a wasteful number, since it uses less digits than its factorization.

51889661773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36984875.

The product of its digits is 15240960, while the sum is 61.

The spelling of 51889661773 in words is "fifty-one billion, eight hundred eighty-nine million, six hundred sixty-one thousand, seven hundred seventy-three".