51369506496 has 504 divisors, whose sum is σ = 187696035072. Its totient is φ = 13145932800.

The previous prime is 51369506483. The next prime is 51369506501. The reversal of 51369506496 is 69460596315.

51369506496 is a `hidden beast` number, since 513 + 69 + 5 + 0 + 64 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 34638171 + ... + 34639653.

It is an arithmetic number, because the mean of its divisors is an integer number (372412768).

Almost surely, 2^51369506496 is an apocalyptic number.

51369506496 is a gapful number since it is divisible by the number (56) 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 51369506496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93848017536).

51369506496 is an abundant number, since it is smaller than the sum of its proper divisors (136326528576).

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

51369506496 is a wasteful number, since it uses less digits than its factorization.

51369506496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 51369506496 in words is "fifty-one billion, three hundred sixty-nine million, five hundred six thousand, four hundred ninety-six".