71662234624421 has 8 divisors (see below), whose sum is σ = 81900563464704. Its totient is φ = 61424122471920.

The previous prime is 71662234624399. The next prime is 71662234624493. The reversal of 71662234624421 is 12442643226617.

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 71662234624421 - 2³⁸ = 71387356717477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71662234624421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71662234620421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53462645 + ... + 54786666.

It is an arithmetic number, because the mean of its divisors is an integer number (10237570433088).

Almost surely, 2^{71662234624421} is an apocalyptic number.

It is an amenable number.

71662234624421 is a deficient number, since it is larger than the sum of its proper divisors (10238328840283).

71662234624421 is a wasteful number, since it uses less digits than its factorization.

71662234624421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108343891.

The product of its digits is 4644864, while the sum is 50.

The spelling of 71662234624421 in words is "seventy-one trillion, six hundred sixty-two billion, two hundred thirty-four million, six hundred twenty-four thousand, four hundred twenty-one".