51110355120 has 320 divisors, whose sum is σ = 176346713088. Its totient is φ = 12142080000.

The previous prime is 51110355103. The next prime is 51110355137. The reversal of 51110355120 is 2155301115.

It is an interprime number because it is at equal distance from previous prime (51110355103) and next prime (51110355137).

It is a super-2 number, since 2×51110355120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27462990 + ... + 27464850.

Almost surely, 2^51110355120 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 51110355120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88173356544).

51110355120 is an abundant number, since it is smaller than the sum of its proper divisors (125236357968).

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

51110355120 is a wasteful number, since it uses less digits than its factorization.

51110355120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 51110355120 its reverse (2155301115), we get a palindrome (53265656235).

The spelling of 51110355120 in words is "fifty-one billion, one hundred ten million, three hundred fifty-five thousand, one hundred twenty".