10509509807 has 16 divisors (see below), whose sum is σ = 11039535360. Its totient is φ = 9985800000.

The previous prime is 10509509783. The next prime is 10509509831. The reversal of 10509509807 is 70890590501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10509509783) and next prime (10509509831).

It is a cyclic number.

It is not a de Polignac number, because 10509509807 - 2¹⁶ = 10509444271 is a prime.

It is a super-2 number, since 2×10509509807² (a number of 21 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 (10509509407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2358932 + ... + 2363382.

It is an arithmetic number, because the mean of its divisors is an integer number (689970960).

Almost surely, 2^10509509807 is an apocalyptic number.

10509509807 is a deficient number, since it is larger than the sum of its proper divisors (530025553).

10509509807 is a wasteful number, since it uses less digits than its factorization.

10509509807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5134.

The product of its (nonzero) digits is 113400, while the sum is 44.

The spelling of 10509509807 in words is "ten billion, five hundred nine million, five hundred nine thousand, eight hundred seven".