221544077157345 has 64 divisors (see below), whose sum is σ = 360618013163520. Its totient is φ = 116121663410688.

The previous prime is 221544077157283. The next prime is 221544077157413. The reversal of 221544077157345 is 543751770445122.

It is not a de Polignac number, because 221544077157345 - 2²⁹ = 221543540286433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2002204812 + ... + 2002315458.

It is an arithmetic number, because the mean of its divisors is an integer number (5634656455680).

Almost surely, 2^{221544077157345} is an apocalyptic number.

It is an amenable number.

221544077157345 is a deficient number, since it is larger than the sum of its proper divisors (139073936006175).

221544077157345 is a wasteful number, since it uses less digits than its factorization.

221544077157345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118534.

The product of its (nonzero) digits is 32928000, while the sum is 57.

The spelling of 221544077157345 in words is "two hundred twenty-one trillion, five hundred forty-four billion, seventy-seven million, one hundred fifty-seven thousand, three hundred forty-five".