445198644280 has 32 divisors (see below), whose sum is σ = 1078750562400. Its totient is φ = 164381037696.

The previous prime is 445198644263. The next prime is 445198644323. The reversal of 445198644280 is 82446891544.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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, 428075100 + ... + 428076139.

It is an arithmetic number, because the mean of its divisors is an integer number (33710955075).

Almost surely, 2^445198644280 is an apocalyptic number.

445198644280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445198644280 is an abundant number, since it is smaller than the sum of its proper divisors (633551918120).

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

445198644280 is a wasteful number, since it uses less digits than its factorization.

445198644280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856151263 (or 856151259 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 55.

The spelling of 445198644280 in words is "four hundred forty-five billion, one hundred ninety-eight million, six hundred forty-four thousand, two hundred eighty".