445480537644 has 120 divisors (see below), whose sum is σ = 1254408680448. Its totient is φ = 137455354080.

The previous prime is 445480537637. The next prime is 445480537661. The reversal of 445480537644 is 446735084544.

445480537644 is a `hidden beast` number, since 4 + 4 + 5 + 48 + 0 + 537 + 64 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 733182 + ... + 1195205.

Almost surely, 2^445480537644 is an apocalyptic number.

It is an amenable number.

445480537644 is an abundant number, since it is smaller than the sum of its proper divisors (808928142804).

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

445480537644 is a wasteful number, since it uses less digits than its factorization.

445480537644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928457 (or 1928446 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 54.

The spelling of 445480537644 in words is "four hundred forty-five billion, four hundred eighty million, five hundred thirty-seven thousand, six hundred forty-four".