51903801000 has 1024 divisors, whose sum is σ = 203793408000. Its totient is φ = 12157516800.

The previous prime is 51903800953. The next prime is 51903801043. The reversal of 51903801000 is 10830915.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 625346959 + ... + 625347041.

It is an arithmetic number, because the mean of its divisors is an integer number (199017000).

Almost surely, 2^51903801000 is an apocalyptic number.

51903801000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51903801000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101896704000).

51903801000 is an abundant number, since it is smaller than the sum of its proper divisors (151889607000).

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

51903801000 is a wasteful number, since it uses less digits than its factorization.

51903801000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 51903801000 in words is "fifty-one billion, nine hundred three million, eight hundred one thousand".