40196666988 has 90 divisors (see below), whose sum is σ = 110904069276. Its totient is φ = 12693647376.

The previous prime is 40196666981. The next prime is 40196666989. The reversal of 40196666988 is 88966669104.

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 29 ways as a sum of consecutive naturals, for example, 54870 + ... + 288797.

Almost surely, 2^40196666988 is an apocalyptic number.

It is an amenable number.

40196666988 is an abundant number, since it is smaller than the sum of its proper divisors (70707402288).

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

40196666988 is a wasteful number, since it uses less digits than its factorization.

40196666988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343721 (or 343691 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 40196666988 in words is "forty billion, one hundred ninety-six million, six hundred sixty-six thousand, nine hundred eighty-eight".