11430871805 has 8 divisors (see below), whose sum is σ = 13904951352. Its totient is φ = 9019427328.

The previous prime is 11430871763. The next prime is 11430871811. The reversal of 11430871805 is 50817803411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 124590244 + 11306281561 = 11162^2 + 106331^2 .

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 11430871805 - 2³² = 7135904509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15658364 + ... + 15659093.

It is an arithmetic number, because the mean of its divisors is an integer number (1738118919).

Almost surely, 2^11430871805 is an apocalyptic number.

It is an amenable number.

11430871805 is a deficient number, since it is larger than the sum of its proper divisors (2474079547).

11430871805 is an equidigital number, since it uses as much as digits as its factorization.

11430871805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31317535.

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 11430871805 in words is "eleven billion, four hundred thirty million, eight hundred seventy-one thousand, eight hundred five".