445775521523020 has 48 divisors (see below), whose sum is σ = 1020284734019040. Its totient is φ = 162610978000896.

The previous prime is 445775521523011. The next prime is 445775521523021. The reversal of 445775521523020 is 20325125577544.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (445775521523021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10328419605 + ... + 10328462764.

It is an arithmetic number, because the mean of its divisors is an integer number (21255931958730).

Almost surely, 2^{445775521523020} is an apocalyptic number.

It is an amenable number.

445775521523020 is an abundant number, since it is smaller than the sum of its proper divisors (574509212496020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445775521523020 is a wasteful number, since it uses less digits than its factorization.

445775521523020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20656882474 (or 20656882472 counting only the distinct ones).

The product of its (nonzero) digits is 11760000, while the sum is 52.

The spelling of 445775521523020 in words is "four hundred forty-five trillion, seven hundred seventy-five billion, five hundred twenty-one million, five hundred twenty-three thousand, twenty".