10505840511 has 8 divisors (see below), whose sum is σ = 14459651584. Its totient is φ = 6777961560.

The previous prime is 10505840507. The next prime is 10505840599. The reversal of 10505840511 is 11504850501.

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

It is not a de Polignac number, because 10505840511 - 2² = 10505840507 is a prime.

It is a super-2 number, since 2×10505840511² (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 (10505842511) 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, 56482921 + ... + 56483106.

It is an arithmetic number, because the mean of its divisors is an integer number (1807456448).

Almost surely, 2^10505840511 is an apocalyptic number.

10505840511 is a deficient number, since it is larger than the sum of its proper divisors (3953811073).

10505840511 is a wasteful number, since it uses less digits than its factorization.

10505840511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112966061.

The product of its (nonzero) digits is 4000, while the sum is 30.

The spelling of 10505840511 in words is "ten billion, five hundred five million, eight hundred forty thousand, five hundred eleven".