445442352520 has 32 divisors (see below), whose sum is σ = 1093358502720. Its totient is φ = 161979037120.

The previous prime is 445442352503. The next prime is 445442352533. The reversal of 445442352520 is 25253244544.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506184052 + ... + 506184931.

It is an arithmetic number, because the mean of its divisors is an integer number (34167453210).

Almost surely, 2^445442352520 is an apocalyptic number.

445442352520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445442352520 is an abundant number, since it is smaller than the sum of its proper divisors (647916150200).

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

445442352520 is a wasteful number, since it uses less digits than its factorization.

445442352520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012369005 (or 1012369001 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 40.

The spelling of 445442352520 in words is "four hundred forty-five billion, four hundred forty-two million, three hundred fifty-two thousand, five hundred twenty".