221454331307745 has 8 divisors (see below), whose sum is σ = 354326930092416. Its totient is φ = 118108976697456.

The previous prime is 221454331307653. The next prime is 221454331307753. The reversal of 221454331307745 is 547703133454122.

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

It is not a de Polignac number, because 221454331307745 - 2¹² = 221454331303649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7381811043577 + ... + 7381811043606.

It is an arithmetic number, because the mean of its divisors is an integer number (44290866261552).

Almost surely, 2^{221454331307745} is an apocalyptic number.

It is an amenable number.

221454331307745 is a deficient number, since it is larger than the sum of its proper divisors (132872598784671).

221454331307745 is a wasteful number, since it uses less digits than its factorization.

221454331307745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14763622087191.

The product of its (nonzero) digits is 8467200, while the sum is 51.

The spelling of 221454331307745 in words is "two hundred twenty-one trillion, four hundred fifty-four billion, three hundred thirty-one million, three hundred seven thousand, seven hundred forty-five".