50617728390 has 128 divisors (see below), whose sum is σ = 127397007360. Its totient is φ = 12854955008.

The previous prime is 50617728389. The next prime is 50617728397. The reversal of 50617728390 is 9382771605.

50617728390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50617728397) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19903459 + ... + 19906001.

It is an arithmetic number, because the mean of its divisors is an integer number (995289120).

Almost surely, 2^50617728390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50617728390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63698503680).

50617728390 is an abundant number, since it is smaller than the sum of its proper divisors (76779278970).

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

50617728390 is a wasteful number, since it uses less digits than its factorization.

50617728390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 50617728390 in words is "fifty billion, six hundred seventeen million, seven hundred twenty-eight thousand, three hundred ninety".