51916610220 has 48 divisors (see below), whose sum is σ = 145883874528. Its totient is φ = 13795156480.

The previous prime is 51916610203. The next prime is 51916610243. The reversal of 51916610220 is 2201661915.

It is a super-3 number, since 3×51916610220³ (a number of 33 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1522779 + ... + 1556498.

It is an arithmetic number, because the mean of its divisors is an integer number (3039247386).

Almost surely, 2^51916610220 is an apocalyptic number.

It is an amenable number.

51916610220 is an abundant number, since it is smaller than the sum of its proper divisors (93967264308).

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

51916610220 is a wasteful number, since it uses less digits than its factorization.

51916610220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079570 (or 3079568 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 51916610220 in words is "fifty-one billion, nine hundred sixteen million, six hundred ten thousand, two hundred twenty".