40194009585 has 48 divisors (see below), whose sum is σ = 73799092224. Its totient is φ = 20167266816.

The previous prime is 40194009539. The next prime is 40194009589. The reversal of 40194009585 is 58590049104.

It is not a de Polignac number, because 40194009585 - 2⁹ = 40194009073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 40194009585.

It is not an unprimeable number, because it can be changed into a prime (40194009589) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2042704 + ... + 2062286.

It is an arithmetic number, because the mean of its divisors is an integer number (1537481088).

Almost surely, 2^40194009585 is an apocalyptic number.

40194009585 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40194009585 is a deficient number, since it is larger than the sum of its proper divisors (33605082639).

40194009585 is a wasteful number, since it uses less digits than its factorization.

40194009585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22294 (or 22291 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 40194009585 in words is "forty billion, one hundred ninety-four million, nine thousand, five hundred eighty-five".