40040020511 has 8 divisors (see below), whose sum is σ = 41790184800. Its totient is φ = 38290630752.

The previous prime is 40040020459. The next prime is 40040020513. The reversal of 40040020511 is 11502004004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40040020511 is a prime.

It is a super-2 number, since 2×40040020511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40040020511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040020513) 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 7 ways as a sum of consecutive naturals, for example, 86720 + ... + 295973.

It is an arithmetic number, because the mean of its divisors is an integer number (5223773100).

Almost surely, 2^40040020511 is an apocalyptic number.

40040020511 is a deficient number, since it is larger than the sum of its proper divisors (1750164289).

40040020511 is a wasteful number, since it uses less digits than its factorization.

40040020511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387265.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 40040020511 its reverse (11502004004), we get a palindrome (51542024515).

The spelling of 40040020511 in words is "forty billion, forty million, twenty thousand, five hundred eleven".