445979523280 has 40 divisors (see below), whose sum is σ = 1036938988800. Its totient is φ = 178385513088.

The previous prime is 445979523277. The next prime is 445979523359. The reversal of 445979523280 is 82325979544.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (58) 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, 2664301 + ... + 2826739.

It is an arithmetic number, because the mean of its divisors is an integer number (25923474720).

Almost surely, 2^445979523280 is an apocalyptic number.

445979523280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445979523280 is an abundant number, since it is smaller than the sum of its proper divisors (590959465520).

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

445979523280 is a wasteful number, since it uses less digits than its factorization.

445979523280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196771 (or 196765 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 445979523280 in words is "four hundred forty-five billion, nine hundred seventy-nine million, five hundred twenty-three thousand, two hundred eighty".