11640315461 has 4 divisors (see below), whose sum is σ = 11668776300. Its totient is φ = 11611854624.

The previous prime is 11640315451. The next prime is 11640315469. The reversal of 11640315461 is 16451304611.

11640315461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11218834561 + 421480900 = 105919^2 + 20530^2 .

It is a cyclic number.

It is not a de Polignac number, because 11640315461 - 2⁶ = 11640315397 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 (11640315469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14229806 + ... + 14230623.

It is an arithmetic number, because the mean of its divisors is an integer number (2917194075).

Almost surely, 2^11640315461 is an apocalyptic number.

It is an amenable number.

11640315461 is a deficient number, since it is larger than the sum of its proper divisors (28460839).

11640315461 is an equidigital number, since it uses as much as digits as its factorization.

11640315461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28460838.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 11640315461 in words is "eleven billion, six hundred forty million, three hundred fifteen thousand, four hundred sixty-one".