40672131217 has 4 divisors (see below), whose sum is σ = 40673121280. Its totient is φ = 40671141156.

The previous prime is 40672131211. The next prime is 40672131229. The reversal of 40672131217 is 71213127604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40672131217 - 2³ = 40672131209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40672131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430617 + ... + 516502.

It is an arithmetic number, because the mean of its divisors is an integer number (10168280320).

Almost surely, 2^40672131217 is an apocalyptic number.

It is an amenable number.

40672131217 is a deficient number, since it is larger than the sum of its proper divisors (990063).

40672131217 is an equidigital number, since it uses as much as digits as its factorization.

40672131217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990062.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 40672131217 in words is "forty billion, six hundred seventy-two million, one hundred thirty-one thousand, two hundred seventeen".