40140217986 has 32 divisors (see below), whose sum is σ = 87688657728. Its totient is φ = 12148424640.

The previous prime is 40140217967. The next prime is 40140217991. The reversal of 40140217986 is 68971204104.

It is a super-2 number, since 2×40140217986² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328945 + ... + 434148.

It is an arithmetic number, because the mean of its divisors is an integer number (2740270554).

Almost surely, 2^40140217986 is an apocalyptic number.

40140217986 is an abundant number, since it is smaller than the sum of its proper divisors (47548439742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40140217986 is a wasteful number, since it uses less digits than its factorization.

40140217986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763906.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 40140217986 in words is "forty billion, one hundred forty million, two hundred seventeen thousand, nine hundred eighty-six".