50078581061 has 4 divisors (see below), whose sum is σ = 50082120192. Its totient is φ = 50075041932.

The previous prime is 50078581051. The next prime is 50078581073. The reversal of 50078581061 is 16018587005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16018587005 = 5 ⋅3203717401.

It is a cyclic number.

It is not a de Polignac number, because 50078581061 - 2⁶ = 50078580997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50078581001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748255 + ... + 1776668.

It is an arithmetic number, because the mean of its divisors is an integer number (12520530048).

Almost surely, 2^50078581061 is an apocalyptic number.

It is an amenable number.

50078581061 is a deficient number, since it is larger than the sum of its proper divisors (3539131).

50078581061 is a wasteful number, since it uses less digits than its factorization.

50078581061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539130.

The product of its (nonzero) digits is 67200, while the sum is 41.

The spelling of 50078581061 in words is "fifty billion, seventy-eight million, five hundred eighty-one thousand, sixty-one".