40453320320 has 128 divisors (see below), whose sum is σ = 114335798400. Its totient is φ = 13391400960.

The previous prime is 40453320319. The next prime is 40453320353. The reversal of 40453320320 is 2302335404.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×40453320320² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40453320320.

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, 25766 + ... + 285605.

It is an arithmetic number, because the mean of its divisors is an integer number (893248425).

Almost surely, 2^40453320320 is an apocalyptic number.

40453320320 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 40453320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57167899200).

40453320320 is an abundant number, since it is smaller than the sum of its proper divisors (73882478080).

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

40453320320 is a wasteful number, since it uses less digits than its factorization.

40453320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311426 (or 311414 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 26.

Adding to 40453320320 its reverse (2302335404), we get a palindrome (42755655724).

The spelling of 40453320320 in words is "forty billion, four hundred fifty-three million, three hundred twenty thousand, three hundred twenty".