71745444417 has 4 divisors (see below), whose sum is σ = 95660592560. Its totient is φ = 47830296276.

The previous prime is 71745444373. The next prime is 71745444461. The reversal of 71745444417 is 71444454717.

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 an interprime number because it is at equal distance from previous prime (71745444373) and next prime (71745444461).

It is not a de Polignac number, because 71745444417 - 2²⁰ = 71744395841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71745444467) 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, 11957574067 + ... + 11957574072.

It is an arithmetic number, because the mean of its divisors is an integer number (23915148140).

Almost surely, 2^71745444417 is an apocalyptic number.

It is an amenable number.

71745444417 is a deficient number, since it is larger than the sum of its proper divisors (23915148143).

71745444417 is a wasteful number, since it uses less digits than its factorization.

71745444417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23915148142.

The product of its digits is 1756160, while the sum is 48.

The spelling of 71745444417 in words is "seventy-one billion, seven hundred forty-five million, four hundred forty-four thousand, four hundred seventeen".