51836853366 has 64 divisors (see below), whose sum is σ = 116769219840. Its totient is φ = 17043194880.

The previous prime is 51836853337. The next prime is 51836853371. The reversal of 51836853366 is 66335863815.

51836853366 is a `hidden beast` number, since 5 + 18 + 36 + 8 + 533 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2863941 + ... + 2881983.

It is an arithmetic number, because the mean of its divisors is an integer number (1824519060).

Almost surely, 2^51836853366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51836853366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58384609920).

51836853366 is an abundant number, since it is smaller than the sum of its proper divisors (64932366474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51836853366 is a wasteful number, since it uses less digits than its factorization.

51836853366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18778 (or 18772 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 51836853366 in words is "fifty-one billion, eight hundred thirty-six million, eight hundred fifty-three thousand, three hundred sixty-six".