51608304120 has 128 divisors (see below), whose sum is σ = 157443264000. Its totient is φ = 13531415040.

The previous prime is 51608304113. The next prime is 51608304157. The reversal of 51608304120 is 2140380615.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1698421 + ... + 1728539.

It is an arithmetic number, because the mean of its divisors is an integer number (1230025500).

Almost surely, 2^51608304120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51608304120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78721632000).

51608304120 is an abundant number, since it is smaller than the sum of its proper divisors (105834959880).

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

51608304120 is a wasteful number, since it uses less digits than its factorization.

51608304120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30373 (or 30369 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 51608304120 its reverse (2140380615), we get a palindrome (53748684735).

The spelling of 51608304120 in words is "fifty-one billion, six hundred eight million, three hundred four thousand, one hundred twenty".