21548320202572 has 12 divisors (see below), whose sum is σ = 38186896562080. Its totient is φ = 10637778327696.

The previous prime is 21548320202561. The next prime is 21548320202599. The reversal of 21548320202572 is 27520202384512.

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, 34095443043 + ... + 34095443674.

Almost surely, 2^{21548320202572} is an apocalyptic number.

It is an amenable number.

21548320202572 is a deficient number, since it is larger than the sum of its proper divisors (16638576359508).

21548320202572 is a wasteful number, since it uses less digits than its factorization.

21548320202572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68190886800 (or 68190886798 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 21548320202572 in words is "twenty-one trillion, five hundred forty-eight billion, three hundred twenty million, two hundred two thousand, five hundred seventy-two".