445472807646 has 16 divisors (see below), whose sum is σ = 894769419024. Its totient is φ = 147853635264.

The previous prime is 445472807629. The next prime is 445472807657. The reversal of 445472807646 is 646708274544.

It is a super-2 number, since 2×445472807646² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 159323641 + ... + 159326436.

It is an arithmetic number, because the mean of its divisors is an integer number (55923088689).

Almost surely, 2^445472807646 is an apocalyptic number.

445472807646 is an abundant number, since it is smaller than the sum of its proper divisors (449296611378).

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

445472807646 is a wasteful number, since it uses less digits than its factorization.

445472807646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318650315.

The product of its (nonzero) digits is 36126720, while the sum is 57.

The spelling of 445472807646 in words is "four hundred forty-five billion, four hundred seventy-two million, eight hundred seven thousand, six hundred forty-six".