40018243569 has 8 divisors (see below), whose sum is σ = 53402090592. Its totient is φ = 26656612800.

The previous prime is 40018243493. The next prime is 40018243583. The reversal of 40018243569 is 96534281004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40018243569 - 2¹¹ = 40018241521 is a prime.

It is a super-2 number, since 2×40018243569² (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 40018243569.

It is not an unprimeable number, because it can be changed into a prime (40018243589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5549859 + ... + 5557064.

It is an arithmetic number, because the mean of its divisors is an integer number (6675261324).

Almost surely, 2^40018243569 is an apocalyptic number.

It is an amenable number.

40018243569 is a deficient number, since it is larger than the sum of its proper divisors (13383847023).

40018243569 is a wasteful number, since it uses less digits than its factorization.

40018243569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11108127.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 40018243569 in words is "forty billion, eighteen million, two hundred forty-three thousand, five hundred sixty-nine".