445641310620 has 72 divisors (see below), whose sum is σ = 1474667616240. Its totient is φ = 108034256640.

The previous prime is 445641310613. The next prime is 445641310649. The reversal of 445641310620 is 26013146544.

445641310620 is a `hidden beast` number, since 4 + 4 + 5 + 6 + 4 + 13 + 10 + 620 = 666.

It is a super-2 number, since 2×445641310620² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112533705 + ... + 112537664.

It is an arithmetic number, because the mean of its divisors is an integer number (20481494670).

Almost surely, 2^445641310620 is an apocalyptic number.

It is an amenable number.

445641310620 is an abundant number, since it is smaller than the sum of its proper divisors (1029026305620).

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

445641310620 is a wasteful number, since it uses less digits than its factorization.

445641310620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225071395 (or 225071390 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 445641310620 in words is "four hundred forty-five billion, six hundred forty-one million, three hundred ten thousand, six hundred twenty".