5108868011521 has 4 divisors (see below), whose sum is σ = 5108951754544. Its totient is φ = 5108784268500.

The previous prime is 5108868011509. The next prime is 5108868011549. The reversal of 5108868011521 is 1251108688015.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5108868011521 is a prime.

It is a super-2 number, since 2×5108868011521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5108868071521) 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, 41779935 + ... + 41902036.

It is an arithmetic number, because the mean of its divisors is an integer number (1277237938636).

Almost surely, 2^{5108868011521} is an apocalyptic number.

It is an amenable number.

5108868011521 is a deficient number, since it is larger than the sum of its proper divisors (83743023).

5108868011521 is an equidigital number, since it uses as much as digits as its factorization.

5108868011521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83743022.

The product of its (nonzero) digits is 153600, while the sum is 46.

The spelling of 5108868011521 in words is "five trillion, one hundred eight billion, eight hundred sixty-eight million, eleven thousand, five hundred twenty-one".