40140217987 has 8 divisors (see below), whose sum is σ = 42907042080. Its totient is φ = 37458527040.

The previous prime is 40140217967. The next prime is 40140217991. The reversal of 40140217987 is 78971204104.

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

It is a cyclic number.

It is not a de Polignac number, because 40140217987 - 2¹¹ = 40140215939 is a prime.

It is a super-2 number, since 2×40140217987² (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 (40140217967) 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, 21282312 + ... + 21284197.

It is an arithmetic number, because the mean of its divisors is an integer number (5363380260).

Almost surely, 2^40140217987 is an apocalyptic number.

40140217987 is a deficient number, since it is larger than the sum of its proper divisors (2766824093).

40140217987 is a wasteful number, since it uses less digits than its factorization.

40140217987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42566573.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 40140217987 in words is "forty billion, one hundred forty million, two hundred seventeen thousand, nine hundred eighty-seven".