51018190848 has 260 divisors, whose sum is σ = 153186116160. Its totient is φ = 16919248896.

The previous prime is 51018190831. The next prime is 51018190849. The reversal of 51018190848 is 84809181015.

51018190848 is a `hidden beast` number, since 510 + 1 + 8 + 1 + 90 + 8 + 48 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51018190849) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 121761583 + ... + 121762001.

Almost surely, 2^51018190848 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 51018190848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76593058080).

51018190848 is an abundant number, since it is smaller than the sum of its proper divisors (102167925312).

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

51018190848 is an equidigital number, since it uses as much as digits as its factorization.

51018190848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 45.

The spelling of 51018190848 in words is "fifty-one billion, eighteen million, one hundred ninety thousand, eight hundred forty-eight".