50731353699840 has 3840 divisors, whose sum is σ = 221967553167360. Its totient is φ = 10964533248000.

The previous prime is 50731353699827. The next prime is 50731353699841. The reversal of 50731353699840 is 4899635313705.

50731353699840 is a `hidden beast` number, since 5 + 0 + 7 + 3 + 1 + 3 + 536 + 9 + 98 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3840).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50731353699841) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 165248708967 + ... + 165248709273.

It is an arithmetic number, because the mean of its divisors is an integer number (57804050304).

Almost surely, 2^{50731353699840} 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 50731353699840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110983776583680).

50731353699840 is an abundant number, since it is smaller than the sum of its proper divisors (171236199467520).

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

50731353699840 is a wasteful number, since it uses less digits than its factorization.

50731353699840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 73483200, while the sum is 63.

The spelling of 50731353699840 in words is "fifty trillion, seven hundred thirty-one billion, three hundred fifty-three million, six hundred ninety-nine thousand, eight hundred forty".