51650733140 has 72 divisors (see below), whose sum is σ = 115353437472. Its totient is φ = 19422845440.

The previous prime is 51650733091. The next prime is 51650733151. The reversal of 51650733140 is 4133705615.

It is a self number, because there is not a number n which added to its sum of digits gives 51650733140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5607779 + ... + 5616981.

It is an arithmetic number, because the mean of its divisors is an integer number (1602131076).

Almost surely, 2^51650733140 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 51650733140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57676718736).

51650733140 is an abundant number, since it is smaller than the sum of its proper divisors (63702704332).

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

51650733140 is a wasteful number, since it uses less digits than its factorization.

51650733140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10217 (or 10198 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 51650733140 in words is "fifty-one billion, six hundred fifty million, seven hundred thirty-three thousand, one hundred forty".