51055030020 has 48 divisors (see below), whose sum is σ = 151363150848. Its totient is φ = 12813811200.

The previous prime is 51055029983. The next prime is 51055030021. The reversal of 51055030020 is 2003055015.

It is not an unprimeable number, because it can be changed into a prime (51055030021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25025956 + ... + 25027995.

It is an arithmetic number, because the mean of its divisors is an integer number (3153398976).

Almost surely, 2^51055030020 is an apocalyptic number.

It is an amenable number.

51055030020 is an abundant number, since it is smaller than the sum of its proper divisors (100308120828).

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

51055030020 is a wasteful number, since it uses less digits than its factorization.

51055030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50053980 (or 50053978 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

Adding to 51055030020 its reverse (2003055015), we get a palindrome (53058085035).

The spelling of 51055030020 in words is "fifty-one billion, fifty-five million, thirty thousand, twenty".