221463328727 has 8 divisors (see below), whose sum is σ = 240828167376. Its totient is φ = 202802666112.

The previous prime is 221463328687. The next prime is 221463328733. The reversal of 221463328727 is 727823364122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221463328727 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 (221463328777) 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, 176043353 + ... + 176044610.

It is an arithmetic number, because the mean of its divisors is an integer number (30103520922).

Almost surely, 2^221463328727 is an apocalyptic number.

221463328727 is a deficient number, since it is larger than the sum of its proper divisors (19364838649).

221463328727 is a wasteful number, since it uses less digits than its factorization.

221463328727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352088017.

The product of its digits is 1354752, while the sum is 47.

The spelling of 221463328727 in words is "two hundred twenty-one billion, four hundred sixty-three million, three hundred twenty-eight thousand, seven hundred twenty-seven".