221411751604464 has 20 divisors (see below), whose sum is σ = 571980358311656. Its totient is φ = 73803917201472.

The previous prime is 221411751604451. The next prime is 221411751604499. The reversal of 221411751604464 is 464406157114122.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 4612744825093 = 221411751604464 / (2 + 2 + 1 + 4 + 1 + 1 + 7 + 5 + 1 + 6 + 0 + 4 + 4 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306372412499 + ... + 2306372412594.

Almost surely, 2^{221411751604464} is an apocalyptic number.

221411751604464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221411751604464 is an abundant number, since it is smaller than the sum of its proper divisors (350568606707192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221411751604464 is a wasteful number, since it uses less digits than its factorization.

221411751604464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612744825104 (or 4612744825098 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 221411751604464 in words is "two hundred twenty-one trillion, four hundred eleven billion, seven hundred fifty-one million, six hundred four thousand, four hundred sixty-four".