45552640021523 has 4 divisors (see below), whose sum is σ = 46412123795568. Its totient is φ = 44693156247480.

The previous prime is 45552640021387. The next prime is 45552640021543. The reversal of 45552640021523 is 32512004625554.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45552640021523 - 2⁸ = 45552640021267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45552640021543) 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, 429741886943 + ... + 429741887048.

It is an arithmetic number, because the mean of its divisors is an integer number (11603030948892).

Almost surely, 2^{45552640021523} is an apocalyptic number.

45552640021523 is a deficient number, since it is larger than the sum of its proper divisors (859483774045).

45552640021523 is an equidigital number, since it uses as much as digits as its factorization.

45552640021523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859483774044.

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 45552640021523 in words is "forty-five trillion, five hundred fifty-two billion, six hundred forty million, twenty-one thousand, five hundred twenty-three".