71663883607 has 8 divisors (see below), whose sum is σ = 73241710272. Its totient is φ = 70088268000.

The previous prime is 71663883581. The next prime is 71663883619. The reversal of 71663883607 is 70638836617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71663883607 - 2³¹ = 69516399959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71663883637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487144 + ... + 616957.

It is an arithmetic number, because the mean of its divisors is an integer number (9155213784).

Almost surely, 2^71663883607 is an apocalyptic number.

71663883607 is a deficient number, since it is larger than the sum of its proper divisors (1577826665).

71663883607 is a wasteful number, since it uses less digits than its factorization.

71663883607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105529.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 71663883607 in words is "seventy-one billion, six hundred sixty-three million, eight hundred eighty-three thousand, six hundred seven".