11315835700721 has 4 divisors (see below), whose sum is σ = 11315993504244. Its totient is φ = 11315677897200.

The previous prime is 11315835700717. The next prime is 11315835700727. The reversal of 11315835700721 is 12700753851311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4478996580496 + 6836839120225 = 2116364^2 + 2614735^2 .

It is a cyclic number.

It is not a de Polignac number, because 11315835700721 - 2² = 11315835700717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11315835700727) 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, 78794150 + ... + 78937631.

It is an arithmetic number, because the mean of its divisors is an integer number (2828998376061).

Almost surely, 2^{11315835700721} is an apocalyptic number.

It is an amenable number.

11315835700721 is a deficient number, since it is larger than the sum of its proper divisors (157803523).

11315835700721 is an equidigital number, since it uses as much as digits as its factorization.

11315835700721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157803522.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 11315835700721 in words is "eleven trillion, three hundred fifteen billion, eight hundred thirty-five million, seven hundred thousand, seven hundred twenty-one".