11461405645 has 4 divisors (see below), whose sum is σ = 13753686780. Its totient is φ = 9169124512.

The previous prime is 11461405633. The next prime is 11461405651. The reversal of 11461405645 is 54650416411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54650416411 = 739 ⋅73951849.

It can be written as a sum of positive squares in 2 ways, for example, as 8210353321 + 3251052324 = 90611^2 + 57018^2 .

It is a cyclic number.

It is not a de Polignac number, because 11461405645 - 2²⁵ = 11427851213 is a prime.

It is a super-3 number, since 3×11461405645³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1146140560 + ... + 1146140569.

It is an arithmetic number, because the mean of its divisors is an integer number (3438421695).

Almost surely, 2^11461405645 is an apocalyptic number.

It is an amenable number.

11461405645 is a deficient number, since it is larger than the sum of its proper divisors (2292281135).

11461405645 is an equidigital number, since it uses as much as digits as its factorization.

11461405645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292281134.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 11461405645 in words is "eleven billion, four hundred sixty-one million, four hundred five thousand, six hundred forty-five".