40138404667 has 8 divisors (see below), whose sum is σ = 41902033824. Its totient is φ = 38376315648.

The previous prime is 40138404661. The next prime is 40138404707. The reversal of 40138404667 is 76640483104.

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 40138404667 - 2³¹ = 37990921019 is a prime.

It is a super-2 number, since 2×40138404667² (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 (40138404661) 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, 331608 + ... + 436165.

It is an arithmetic number, because the mean of its divisors is an integer number (5237754228).

Almost surely, 2^40138404667 is an apocalyptic number.

40138404667 is a deficient number, since it is larger than the sum of its proper divisors (1763629157).

40138404667 is a wasteful number, since it uses less digits than its factorization.

40138404667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770069.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 40138404667 in words is "forty billion, one hundred thirty-eight million, four hundred four thousand, six hundred sixty-seven".