40402340445 has 16 divisors (see below), whose sum is σ = 64667689920. Its totient is φ = 21539933184.

The previous prime is 40402340443. The next prime is 40402340453. The reversal of 40402340445 is 54404320404.

It is not a de Polignac number, because 40402340445 - 2¹ = 40402340443 is a prime.

It is a super-2 number, since 2×40402340445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402340443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456900 + ... + 538109.

It is an arithmetic number, because the mean of its divisors is an integer number (4041730620).

Almost surely, 2^40402340445 is an apocalyptic number.

It is an amenable number.

40402340445 is a deficient number, since it is larger than the sum of its proper divisors (24265349475).

40402340445 is a wasteful number, since it uses less digits than its factorization.

40402340445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997724.

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

Adding to 40402340445 its reverse (54404320404), we get a palindrome (94806660849).

The spelling of 40402340445 in words is "forty billion, four hundred two million, three hundred forty thousand, four hundred forty-five".