221432747403545 has 8 divisors (see below), whose sum is σ = 265780536665280. Its totient is φ = 177105371402160.

The previous prime is 221432747403541. The next prime is 221432747403547. The reversal of 221432747403545 is 545304747234122.

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

It is not a de Polignac number, because 221432747403545 - 2² = 221432747403541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221432747403541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5103291221 + ... + 5103334610.

It is an arithmetic number, because the mean of its divisors is an integer number (33222567083160).

Almost surely, 2^{221432747403545} is an apocalyptic number.

It is an amenable number.

221432747403545 is a deficient number, since it is larger than the sum of its proper divisors (44347789261735).

221432747403545 is a wasteful number, since it uses less digits than its factorization.

221432747403545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10206630175.

The product of its (nonzero) digits is 22579200, while the sum is 53.

The spelling of 221432747403545 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, seven hundred forty-seven million, four hundred three thousand, five hundred forty-five".