10509508550 has 24 divisors (see below), whose sum is σ = 19553390616. Its totient is φ = 4202576640.

The previous prime is 10509508549. The next prime is 10509508561. The reversal of 10509508550 is 5580590501.

It is a super-2 number, since 2×10509508550² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 153302 + ... + 210998.

It is an arithmetic number, because the mean of its divisors is an integer number (814724609).

Almost surely, 2^10509508550 is an apocalyptic number.

10509508550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10509508550 is a deficient number, since it is larger than the sum of its proper divisors (9043882066).

10509508550 is a wasteful number, since it uses less digits than its factorization.

10509508550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61352 (or 61347 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 38.

The spelling of 10509508550 in words is "ten billion, five hundred nine million, five hundred eight thousand, five hundred fifty".