40642491848217 has 32 divisors (see below), whose sum is σ = 66969641521152. Its totient is φ = 21393079912704.

The previous prime is 40642491848197. The next prime is 40642491848219. The reversal of 40642491848217 is 71284819424604.

It is a happy number.

It is not a de Polignac number, because 40642491848217 - 2¹⁶ = 40642491782681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40642491848219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1211095083 + ... + 1211128640.

It is an arithmetic number, because the mean of its divisors is an integer number (2092801297536).

Almost surely, 2^{40642491848217} is an apocalyptic number.

40642491848217 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40642491848217 is a deficient number, since it is larger than the sum of its proper divisors (26327149672935).

40642491848217 is a wasteful number, since it uses less digits than its factorization.

40642491848217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422223797.

The product of its (nonzero) digits is 24772608, while the sum is 60.

The spelling of 40642491848217 in words is "forty trillion, six hundred forty-two billion, four hundred ninety-one million, eight hundred forty-eight thousand, two hundred seventeen".