51513100544 has 72 divisors (see below), whose sum is σ = 103440953280. Its totient is φ = 25602766848.

The previous prime is 51513100537. The next prime is 51513100559. The reversal of 51513100544 is 44500131515.

51513100544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52403477 + ... + 52404459.

Almost surely, 2^51513100544 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 51513100544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51720476640).

51513100544 is an abundant number, since it is smaller than the sum of its proper divisors (51927852736).

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

51513100544 is an equidigital number, since it uses as much as digits as its factorization.

51513100544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2001 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 51513100544 in words is "fifty-one billion, five hundred thirteen million, one hundred thousand, five hundred forty-four".