50777709840 has 640 divisors, whose sum is σ = 212146421760. Its totient is φ = 10994227200.

The previous prime is 50777709823. The next prime is 50777709863. The reversal of 50777709840 is 4890777705.

50777709840 is a `hidden beast` number, since 507 + 7 + 7 + 7 + 0 + 98 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9572629 + ... + 9577931.

It is an arithmetic number, because the mean of its divisors is an integer number (331478784).

Almost surely, 2^50777709840 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 50777709840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106073210880).

50777709840 is an abundant number, since it is smaller than the sum of its proper divisors (161368711920).

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

50777709840 is a wasteful number, since it uses less digits than its factorization.

50777709840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5380 (or 5368 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 54.

The spelling of 50777709840 in words is "fifty billion, seven hundred seventy-seven million, seven hundred nine thousand, eight hundred forty".