21601488547630 has 16 divisors (see below), whose sum is σ = 39099901061520. Its totient is φ = 8592323935552.

The previous prime is 21601488547627. The next prime is 21601488547651. The reversal of 21601488547630 is 3674588410612.

It is a congruent number.

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, 6033933559 + ... + 6033937138.

It is an arithmetic number, because the mean of its divisors is an integer number (2443743816345).

Almost surely, 2^{21601488547630} is an apocalyptic number.

21601488547630 is a deficient number, since it is larger than the sum of its proper divisors (17498412513890).

21601488547630 is a wasteful number, since it uses less digits than its factorization.

21601488547630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12067870883.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 21601488547630 in words is "twenty-one trillion, six hundred one billion, four hundred eighty-eight million, five hundred forty-seven thousand, six hundred thirty".