50278585781 has 8 divisors (see below), whose sum is σ = 50824428480. Its totient is φ = 49734513472.

The previous prime is 50278585757. The next prime is 50278585793. The reversal of 50278585781 is 18758587205.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50278585781 - 2¹⁸ = 50278323637 is a prime.

It is a super-2 number, since 2×50278585781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50278585711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385451 + ... + 499128.

It is an arithmetic number, because the mean of its divisors is an integer number (6353053560).

Almost surely, 2^50278585781 is an apocalyptic number.

It is an amenable number.

50278585781 is a deficient number, since it is larger than the sum of its proper divisors (545842699).

50278585781 is a wasteful number, since it uses less digits than its factorization.

50278585781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885195.

The product of its (nonzero) digits is 6272000, while the sum is 56.

The spelling of 50278585781 in words is "fifty billion, two hundred seventy-eight million, five hundred eighty-five thousand, seven hundred eighty-one".