51235320000 has 280 divisors, whose sum is σ = 169966843200. Its totient is φ = 13616768000.

The previous prime is 51235319969. The next prime is 51235320043. The reversal of 51235320000 is 2353215.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 50279491 + ... + 50280509.

It is an arithmetic number, because the mean of its divisors is an integer number (607024440).

Almost surely, 2^51235320000 is an apocalyptic number.

51235320000 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 51235320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84983421600).

51235320000 is an abundant number, since it is smaller than the sum of its proper divisors (118731523200).

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

51235320000 is a wasteful number, since it uses less digits than its factorization.

51235320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

Adding to 51235320000 its reverse (2353215), we get a palindrome (51237673215).

The spelling of 51235320000 in words is "fifty-one billion, two hundred thirty-five million, three hundred twenty thousand".