445353448890 has 256 divisors, whose sum is σ = 1287779254272. Its totient is φ = 96370331904.

The previous prime is 445353448889. The next prime is 445353448907. The reversal of 445353448890 is 98844353544.

It is a self number, because there is not a number n which added to its sum of digits gives 445353448890.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 418958499 + ... + 418959561.

It is an arithmetic number, because the mean of its divisors is an integer number (5030387712).

Almost surely, 2^445353448890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445353448890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643889627136).

445353448890 is an abundant number, since it is smaller than the sum of its proper divisors (842425805382).

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

445353448890 is a wasteful number, since it uses less digits than its factorization.

445353448890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913.

The product of its (nonzero) digits is 33177600, while the sum is 57.

The spelling of 445353448890 in words is "four hundred forty-five billion, three hundred fifty-three million, four hundred forty-eight thousand, eight hundred ninety".