50085005781 has 16 divisors (see below), whose sum is σ = 69689203200. Its totient is φ = 31935644400.

The previous prime is 50085005779. The next prime is 50085005791. The reversal of 50085005781 is 18750058005.

50085005781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50085005781 - 2¹ = 50085005779 is a prime.

It is a super-2 number, since 2×50085005781² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50085005701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158606 + ... + 1201056.

It is an arithmetic number, because the mean of its divisors is an integer number (4355575200).

Almost surely, 2^50085005781 is an apocalyptic number.

It is an amenable number.

50085005781 is a deficient number, since it is larger than the sum of its proper divisors (19604197419).

50085005781 is a wasteful number, since it uses less digits than its factorization.

50085005781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59576.

The product of its (nonzero) digits is 56000, while the sum is 39.

The spelling of 50085005781 in words is "fifty billion, eighty-five million, five thousand, seven hundred eighty-one".