50646435840 has 1920 divisors, whose sum is σ = 247731644160. Its totient is φ = 9555148800.

The previous prime is 50646435823. The next prime is 50646435841. The reversal of 50646435840 is 4853464605.

50646435840 is a `hidden beast` number, since 5 + 0 + 6 + 4 + 64 + 3 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a super-2 number, since 2×50646435840² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50646435841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 830269410 + ... + 830269470.

It is an arithmetic number, because the mean of its divisors is an integer number (129026898).

Almost surely, 2^50646435840 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 50646435840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123865822080).

50646435840 is an abundant number, since it is smaller than the sum of its proper divisors (197085208320).

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

50646435840 is a wasteful number, since it uses less digits than its factorization.

50646435840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 50646435840 in words is "fifty billion, six hundred forty-six million, four hundred thirty-five thousand, eight hundred forty".