445462120644 has 12 divisors (see below), whose sum is σ = 1039411614864. Its totient is φ = 148487373544.

The previous prime is 445462120633. The next prime is 445462120657. The reversal of 445462120644 is 446021264544.

445462120644 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×445462120644² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445462120596 and 445462120605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18560921682 + ... + 18560921705.

It is an arithmetic number, because the mean of its divisors is an integer number (86617634572).

Almost surely, 2^445462120644 is an apocalyptic number.

It is an amenable number.

445462120644 is an abundant number, since it is smaller than the sum of its proper divisors (593949494220).

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

445462120644 is a wasteful number, since it uses less digits than its factorization.

445462120644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37121843394 (or 37121843392 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 42.

The spelling of 445462120644 in words is "four hundred forty-five billion, four hundred sixty-two million, one hundred twenty thousand, six hundred forty-four".