440245621660 has 48 divisors (see below), whose sum is σ = 997382534400. Its totient is φ = 162266494464.

The previous prime is 440245621657. The next prime is 440245621661. The reversal of 440245621660 is 66126542044.

It is a happy number.

It is a super-2 number, since 2×440245621660² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440245621661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339980 + ... + 1635859.

It is an arithmetic number, because the mean of its divisors is an integer number (20778802800).

Almost surely, 2^440245621660 is an apocalyptic number.

It is an amenable number.

440245621660 is an abundant number, since it is smaller than the sum of its proper divisors (557136912740).

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

440245621660 is a wasteful number, since it uses less digits than its factorization.

440245621660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976430 (or 2976428 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 440245621660 in words is "four hundred forty billion, two hundred forty-five million, six hundred twenty-one thousand, six hundred sixty".