38717672417 has 4 divisors (see below), whose sum is σ = 38740543380. Its totient is φ = 38694801456.

The previous prime is 38717672407. The next prime is 38717672443. The reversal of 38717672417 is 71427671783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29569897681 + 9147774736 = 171959^2 + 95644^2 .

It is a cyclic number.

It is not a de Polignac number, because 38717672417 - 2¹⁸ = 38717410273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38717672407) 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, 11432942 + ... + 11436327.

It is an arithmetic number, because the mean of its divisors is an integer number (9685135845).

Almost surely, 2^38717672417 is an apocalyptic number.

It is an amenable number.

38717672417 is a deficient number, since it is larger than the sum of its proper divisors (22870963).

38717672417 is a wasteful number, since it uses less digits than its factorization.

38717672417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22870962.

The product of its digits is 2765952, while the sum is 53.

The spelling of 38717672417 in words is "thirty-eight billion, seven hundred seventeen million, six hundred seventy-two thousand, four hundred seventeen".