221541545486 has 8 divisors (see below), whose sum is σ = 334928951040. Its totient is φ = 109898561808.

The previous prime is 221541545417. The next prime is 221541545513. The reversal of 221541545486 is 684545145122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221541545486.

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, 436105151 + ... + 436105658.

It is an arithmetic number, because the mean of its divisors is an integer number (41866118880).

Almost surely, 2^221541545486 is an apocalyptic number.

221541545486 is a deficient number, since it is larger than the sum of its proper divisors (113387405554).

221541545486 is a wasteful number, since it uses less digits than its factorization.

221541545486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872210938.

The product of its digits is 1536000, while the sum is 47.

The spelling of 221541545486 in words is "two hundred twenty-one billion, five hundred forty-one million, five hundred forty-five thousand, four hundred eighty-six".