10505611001 has 4 divisors (see below), whose sum is σ = 10505816400. Its totient is φ = 10505405604.

The previous prime is 10505610979. The next prime is 10505611003. The reversal of 10505611001 is 10011650501.

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 a de Polignac number, because none of the positive numbers 2^k-10505611001 is a prime.

It is a super-2 number, since 2×10505611001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10505611003) 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, 41690 + ... + 150828.

It is an arithmetic number, because the mean of its divisors is an integer number (2626454100).

Almost surely, 2^10505611001 is an apocalyptic number.

It is an amenable number.

10505611001 is a deficient number, since it is larger than the sum of its proper divisors (205399).

10505611001 is an equidigital number, since it uses as much as digits as its factorization.

10505611001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205398.

The product of its (nonzero) digits is 150, while the sum is 20.

The spelling of 10505611001 in words is "ten billion, five hundred five million, six hundred eleven thousand, one".