40720466417 has 4 divisors (see below), whose sum is σ = 42863648880. Its totient is φ = 38577283956.

The previous prime is 40720466399. The next prime is 40720466447. The reversal of 40720466417 is 71466402704.

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 40720466417 - 2²⁶ = 40653357553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40720466447) 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, 1071591203 + ... + 1071591240.

It is an arithmetic number, because the mean of its divisors is an integer number (10715912220).

Almost surely, 2^40720466417 is an apocalyptic number.

It is an amenable number.

40720466417 is a deficient number, since it is larger than the sum of its proper divisors (2143182463).

40720466417 is a wasteful number, since it uses less digits than its factorization.

40720466417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143182462.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 40720466417 in words is "forty billion, seven hundred twenty million, four hundred sixty-six thousand, four hundred seventeen".