11523641452065 has 24 divisors (see below), whose sum is σ = 19974402040320. Its totient is φ = 6145914357024.

The previous prime is 11523641452013. The next prime is 11523641452069. The reversal of 11523641452065 is 56025414632511.

11523641452065 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 3 + 64 + 1 + 4 + 520 + 65 = 666.

It is not a de Polignac number, because 11523641452065 - 2⁸ = 11523641451809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11523641452065.

It is not an unprimeable number, because it can be changed into a prime (11523641452069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13006294 + ... + 13864016.

It is an arithmetic number, because the mean of its divisors is an integer number (832266751680).

Almost surely, 2^{11523641452065} is an apocalyptic number.

11523641452065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11523641452065 is a deficient number, since it is larger than the sum of its proper divisors (8450760588255).

11523641452065 is a wasteful number, since it uses less digits than its factorization.

11523641452065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156293 (or 1156290 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 11523641452065 in words is "eleven trillion, five hundred twenty-three billion, six hundred forty-one million, four hundred fifty-two thousand, sixty-five".