51030496512 has 216 divisors, whose sum is σ = 149005944360. Its totient is φ = 16795238400.

The previous prime is 51030496507. The next prime is 51030496513. The reversal of 51030496512 is 21569403015.

51030496512 is a `hidden beast` number, since 51 + 0 + 3 + 0 + 4 + 96 + 512 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6364210176 + 44666286336 = 79776^2 + 211344^2 .

It is a super-2 number, since 2×51030496512² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030496513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84909012 + ... + 84909612.

It is an arithmetic number, because the mean of its divisors is an integer number (689842335).

Almost surely, 2^51030496512 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 51030496512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74502972180).

51030496512 is an abundant number, since it is smaller than the sum of its proper divisors (97975447848).

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

51030496512 is a wasteful number, since it uses less digits than its factorization.

51030496512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 51030496512 its reverse (21569403015), we get a palindrome (72599899527).

The spelling of 51030496512 in words is "fifty-one billion, thirty million, four hundred ninety-six thousand, five hundred twelve".