10509509801 has 4 divisors (see below), whose sum is σ = 12010868352. Its totient is φ = 9008151252.

The previous prime is 10509509783. The next prime is 10509509831. The reversal of 10509509801 is 10890590501.

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 not a de Polignac number, because 10509509801 - 2¹⁴ = 10509493417 is a prime.

It is a super-2 number, since 2×10509509801² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10509509831) 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, 750679265 + ... + 750679278.

It is an arithmetic number, because the mean of its divisors is an integer number (3002717088).

Almost surely, 2^10509509801 is an apocalyptic number.

It is an amenable number.

10509509801 is a deficient number, since it is larger than the sum of its proper divisors (1501358551).

10509509801 is an equidigital number, since it uses as much as digits as its factorization.

10509509801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501358550.

The product of its (nonzero) digits is 16200, while the sum is 38.

The spelling of 10509509801 in words is "ten billion, five hundred nine million, five hundred nine thousand, eight hundred one".