102561065503 has 8 divisors (see below), whose sum is σ = 115252568928. Its totient is φ = 90555589344.

The previous prime is 102561065473. The next prime is 102561065513. The reversal of 102561065503 is 305560165201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102561065503 - 2⁵ = 102561065471 is a prime.

It is a super-2 number, since 2×102561065503² (a number of 23 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 (102561065513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171506500 + ... + 171507097.

It is an arithmetic number, because the mean of its divisors is an integer number (14406571116).

Almost surely, 2^102561065503 is an apocalyptic number.

102561065503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

102561065503 is a deficient number, since it is larger than the sum of its proper divisors (12691503425).

102561065503 is a wasteful number, since it uses less digits than its factorization.

102561065503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343013633.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 102561065503 in words is "one hundred two billion, five hundred sixty-one million, sixty-five thousand, five hundred three".