5109385561 has 16 divisors (see below), whose sum is σ = 6043386240. Its totient is φ = 4226544000.

The previous prime is 5109385543. The next prime is 5109385579. The reversal of 5109385561 is 1655839015.

It is an interprime number because it is at equal distance from previous prime (5109385543) and next prime (5109385579).

It is not a de Polignac number, because 5109385561 - 2⁵ = 5109385529 is a prime.

It is a super-2 number, since 2×5109385561² = 52211641621910569442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5109385511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605010 + ... + 613396.

It is an arithmetic number, because the mean of its divisors is an integer number (377711640).

Almost surely, 2^5109385561 is an apocalyptic number.

It is an amenable number.

5109385561 is a deficient number, since it is larger than the sum of its proper divisors (934000679).

5109385561 is a wasteful number, since it uses less digits than its factorization.

5109385561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11424.

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 5109385561 is about 71479.9661513630. The cubic root of 5109385561 is about 1722.3558803223.

The spelling of 5109385561 in words is "five billion, one hundred nine million, three hundred eighty-five thousand, five hundred sixty-one".