5111111050505 has 4 divisors (see below), whose sum is σ = 6133333260612. Its totient is φ = 4088888840400.

The previous prime is 5111111050499. The next prime is 5111111050511. The reversal of 5111111050505 is 5050501111115.

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

It is an interprime number because it is at equal distance from previous prime (5111111050499) and next prime (5111111050511).

It can be written as a sum of positive squares in 2 ways, for example, as 2699090837881 + 2412020212624 = 1642891^2 + 1553068^2 .

It is not a de Polignac number, because 5111111050505 - 2¹⁰ = 5111111049481 is a prime.

It is a super-2 number, since 2×5111111050505² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511111105046 + ... + 511111105055.

It is an arithmetic number, because the mean of its divisors is an integer number (1533333315153).

Almost surely, 2^{5111111050505} is an apocalyptic number.

It is an amenable number.

5111111050505 is a deficient number, since it is larger than the sum of its proper divisors (1022222210107).

5111111050505 is a wasteful number, since it uses less digits than its factorization.

5111111050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022222210106.

The product of its (nonzero) digits is 625, while the sum is 26.

The spelling of 5111111050505 in words is "five trillion, one hundred eleven billion, one hundred eleven million, fifty thousand, five hundred five".