445342556640 has 96 divisors (see below), whose sum is σ = 1404246122496. Its totient is φ = 118638051840.

The previous prime is 445342556621. The next prime is 445342556669. The reversal of 445342556640 is 46655243544.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 445342556640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7569 + ... + 943791.

It is an arithmetic number, because the mean of its divisors is an integer number (14627563776).

Almost surely, 2^445342556640 is an apocalyptic number.

445342556640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445342556640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702123061248).

445342556640 is an abundant number, since it is smaller than the sum of its proper divisors (958903565856).

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

445342556640 is a wasteful number, since it uses less digits than its factorization.

445342556640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937232 (or 937224 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 48.

The spelling of 445342556640 in words is "four hundred forty-five billion, three hundred forty-two million, five hundred fifty-six thousand, six hundred forty".