50011110661511 has 4 divisors (see below), whose sum is σ = 50011183708512. Its totient is φ = 50011037614512.

The previous prime is 50011110661507. The next prime is 50011110661609. The reversal of 50011110661511 is 11516601111005.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 50011110661511 - 2² = 50011110661507 is a prime.

It is a super-2 number, since 2×50011110661511² (a number of 28 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 (50011110661111) 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, 35486726 + ... + 36869091.

It is an arithmetic number, because the mean of its divisors is an integer number (12502795927128).

Almost surely, 2^{50011110661511} is an apocalyptic number.

50011110661511 is a deficient number, since it is larger than the sum of its proper divisors (73047001).

50011110661511 is an equidigital number, since it uses as much as digits as its factorization.

50011110661511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73047000.

The product of its (nonzero) digits is 900, while the sum is 29.

Adding to 50011110661511 its reverse (11516601111005), we get a palindrome (61527711772516).

The spelling of 50011110661511 in words is "fifty trillion, eleven billion, one hundred ten million, six hundred sixty-one thousand, five hundred eleven".