445492652640 has 384 divisors, whose sum is σ = 1633323460608. Its totient is φ = 99957473280.

The previous prime is 445492652609. The next prime is 445492652659. The reversal of 445492652640 is 46256294544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 118260037 + ... + 118263803.

It is an arithmetic number, because the mean of its divisors is an integer number (4253446512).

Almost surely, 2^445492652640 is an apocalyptic number.

445492652640 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 445492652640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816661730304).

445492652640 is an abundant number, since it is smaller than the sum of its proper divisors (1187830807968).

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

445492652640 is a wasteful number, since it uses less digits than its factorization.

445492652640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430 (or 4422 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 51.

The spelling of 445492652640 in words is "four hundred forty-five billion, four hundred ninety-two million, six hundred fifty-two thousand, six hundred forty".