445254140240 has 160 divisors (see below), whose sum is σ = 1274558423040. Its totient is φ = 140866209792.

The previous prime is 445254140143. The next prime is 445254140257. The reversal of 445254140240 is 42041452544.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 445254140240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24662897 + ... + 24680943.

It is an arithmetic number, because the mean of its divisors is an integer number (7965990144).

Almost surely, 2^445254140240 is an apocalyptic number.

445254140240 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 445254140240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637279211520).

445254140240 is an abundant number, since it is smaller than the sum of its proper divisors (829304282800).

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

445254140240 is a wasteful number, since it uses less digits than its factorization.

445254140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21469 (or 21463 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 445254140240 its reverse (42041452544), we get a palindrome (487295592784).

The spelling of 445254140240 in words is "four hundred forty-five billion, two hundred fifty-four million, one hundred forty thousand, two hundred forty".