40452442320 has 160 divisors (see below), whose sum is σ = 131077324800. Its totient is φ = 10300764672.

The previous prime is 40452442313. The next prime is 40452442321. The reversal of 40452442320 is 2324425404.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40452442321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3410961 + ... + 3422799.

It is an arithmetic number, because the mean of its divisors is an integer number (819233280).

Almost surely, 2^40452442320 is an apocalyptic number.

40452442320 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 40452442320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65538662400).

40452442320 is an abundant number, since it is smaller than the sum of its proper divisors (90624882480).

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

40452442320 is a wasteful number, since it uses less digits than its factorization.

40452442320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12497 (or 12491 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 40452442320 its reverse (2324425404), we get a palindrome (42776867724).

The spelling of 40452442320 in words is "forty billion, four hundred fifty-two million, four hundred forty-two thousand, three hundred twenty".