40807128968 has 16 divisors (see below), whose sum is σ = 76527505680. Its totient is φ = 20399794128.

The previous prime is 40807128961. The next prime is 40807129007. The reversal of 40807128968 is 86982170804.

It is a happy number.

It is a super-2 number, since 2×40807128968² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40807128961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425030 + ... + 512117.

It is an arithmetic number, because the mean of its divisors is an integer number (4782969105).

Almost surely, 2^40807128968 is an apocalyptic number.

It is an amenable number.

40807128968 is a deficient number, since it is larger than the sum of its proper divisors (35720376712).

40807128968 is a wasteful number, since it uses less digits than its factorization.

40807128968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942596 (or 942592 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 40807128968 in words is "forty billion, eight hundred seven million, one hundred twenty-eight thousand, nine hundred sixty-eight".