11853415457 has 6 divisors (see below), whose sum is σ = 12835355382. Its totient is φ = 10941614112.

The previous prime is 11853415451. The next prime is 11853415459. The reversal of 11853415457 is 75451435811.

It can be written as a sum of positive squares in 3 ways, for example, as 430936081 + 11422479376 = 20759^2 + 106876^2 .

It is not a de Polignac number, because 11853415457 - 2²⁶ = 11786306593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11853415451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35069108 + ... + 35069445.

It is an arithmetic number, because the mean of its divisors is an integer number (2139225897).

Almost surely, 2^11853415457 is an apocalyptic number.

It is an amenable number.

11853415457 is a deficient number, since it is larger than the sum of its proper divisors (981939925).

11853415457 is an equidigital number, since it uses as much as digits as its factorization.

11853415457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70138579 (or 70138566 counting only the distinct ones).

The product of its digits is 336000, while the sum is 44.

The spelling of 11853415457 in words is "eleven billion, eight hundred fifty-three million, four hundred fifteen thousand, four hundred fifty-seven".