51900169220 has 12 divisors (see below), whose sum is σ = 108990355404. Its totient is φ = 20760067680.

The previous prime is 51900169201. The next prime is 51900169259. The reversal of 51900169220 is 2296100915.

It can be written as a sum of positive squares in 2 ways, for example, as 34598976064 + 17301193156 = 186008^2 + 131534^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297504211 + ... + 1297504250.

It is an arithmetic number, because the mean of its divisors is an integer number (9082529617).

Almost surely, 2^51900169220 is an apocalyptic number.

It is an amenable number.

51900169220 is an abundant number, since it is smaller than the sum of its proper divisors (57090186184).

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

51900169220 is a wasteful number, since it uses less digits than its factorization.

51900169220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595008470 (or 2595008468 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 51900169220 in words is "fifty-one billion, nine hundred million, one hundred sixty-nine thousand, two hundred twenty".