50261111111 has 4 divisors (see below), whose sum is σ = 50284457952. Its totient is φ = 50237764272.

The previous prime is 50261111081. The next prime is 50261111113. The reversal of 50261111111 is 11111116205.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50261111111 is a prime.

It is a super-2 number, since 2×50261111111² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

50261111111 is a modest number, since divided by 111111 gives 50261 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50261111113) 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, 11670191 + ... + 11674496.

It is an arithmetic number, because the mean of its divisors is an integer number (12571114488).

Almost surely, 2^50261111111 is an apocalyptic number.

50261111111 is a deficient number, since it is larger than the sum of its proper divisors (23346841).

50261111111 is a wasteful number, since it uses less digits than its factorization.

50261111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23346840.

The product of its (nonzero) digits is 60, while the sum is 20.

Adding to 50261111111 its reverse (11111116205), we get a palindrome (61372227316).

The spelling of 50261111111 in words is "fifty billion, two hundred sixty-one million, one hundred eleven thousand, one hundred eleven".