51887108208 has 160 divisors (see below), whose sum is σ = 154527609600. Its totient is φ = 14868430848.

The previous prime is 51887108197. The next prime is 51887108209. The reversal of 51887108208 is 80280178815.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51887108209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662416 + ... + 736592.

It is an arithmetic number, because the mean of its divisors is an integer number (965797560).

Almost surely, 2^51887108208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51887108208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77263804800).

51887108208 is an abundant number, since it is smaller than the sum of its proper divisors (102640501392).

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

51887108208 is a wasteful number, since it uses less digits than its factorization.

51887108208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74279 (or 74273 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 48.

The spelling of 51887108208 in words is "fifty-one billion, eight hundred eighty-seven million, one hundred eight thousand, two hundred eight".