40145888305 has 16 divisors (see below), whose sum is σ = 49876729344. Its totient is φ = 30988419840.

The previous prime is 40145888303. The next prime is 40145888311. The reversal of 40145888305 is 50388854104.

It is not a de Polignac number, because 40145888305 - 2¹ = 40145888303 is a prime.

It is a super-2 number, since 2×40145888305² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40145888303) 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, 332047 + ... + 436516.

It is an arithmetic number, because the mean of its divisors is an integer number (3117295584).

Almost surely, 2^40145888305 is an apocalyptic number.

It is an amenable number.

40145888305 is a deficient number, since it is larger than the sum of its proper divisors (9730841039).

40145888305 is a wasteful number, since it uses less digits than its factorization.

40145888305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768936.

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 40145888305 in words is "forty billion, one hundred forty-five million, eight hundred eighty-eight thousand, three hundred five".