40196666987 has 16 divisors (see below), whose sum is σ = 43259470848. Its totient is φ = 37278390240.

The previous prime is 40196666981. The next prime is 40196666989. The reversal of 40196666987 is 78966669104.

It is a cyclic number.

It is not a de Polignac number, because 40196666987 - 2⁴ = 40196666971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40196666981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213833 + ... + 355130.

It is an arithmetic number, because the mean of its divisors is an integer number (2703716928).

Almost surely, 2^40196666987 is an apocalyptic number.

40196666987 is a deficient number, since it is larger than the sum of its proper divisors (3062803861).

40196666987 is a wasteful number, since it uses less digits than its factorization.

40196666987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569090.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 40196666987 in words is "forty billion, one hundred ninety-six million, six hundred sixty-six thousand, nine hundred eighty-seven".