50535431640 has 192 divisors, whose sum is σ = 180401644800. Its totient is φ = 12211727616.

The previous prime is 50535431629. The next prime is 50535431641. The reversal of 50535431640 is 4613453505.

50535431640 is a `hidden beast` number, since 5 + 0 + 5 + 3 + 5 + 4 + 3 + 1 + 640 = 666.

It is a super-2 number, since 2×50535431640² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 50535431595 and 50535431604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50535431641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3294 + ... + 317933.

It is an arithmetic number, because the mean of its divisors is an integer number (939591900).

Almost surely, 2^50535431640 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 50535431640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90200822400).

50535431640 is an abundant number, since it is smaller than the sum of its proper divisors (129866213160).

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

50535431640 is a wasteful number, since it uses less digits than its factorization.

50535431640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321286 (or 321279 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 50535431640 in words is "fifty billion, five hundred thirty-five million, four hundred thirty-one thousand, six hundred forty".