11971570735 has 16 divisors (see below), whose sum is σ = 14548709952. Its totient is φ = 9455846400.

The previous prime is 11971570717. The next prime is 11971570739. The reversal of 11971570735 is 53707517911.

It is not a de Polignac number, because 11971570735 - 2⁹ = 11971570223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11971570739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174870 + ... + 233500.

It is an arithmetic number, because the mean of its divisors is an integer number (909294372).

Almost surely, 2^11971570735 is an apocalyptic number.

11971570735 is a deficient number, since it is larger than the sum of its proper divisors (2577139217).

11971570735 is an equidigital number, since it uses as much as digits as its factorization.

11971570735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59154.

The product of its (nonzero) digits is 231525, while the sum is 46.

The spelling of 11971570735 in words is "eleven billion, nine hundred seventy-one million, five hundred seventy thousand, seven hundred thirty-five".