21455160224673 has 32 divisors (see below), whose sum is σ = 32767075941120. Its totient is φ = 12232543276800.

The previous prime is 21455160224627. The next prime is 21455160224677. The reversal of 21455160224673 is 37642206155412.

It is a happy number.

It is not a de Polignac number, because 21455160224673 - 2²¹ = 21455158127521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21455160224677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37738623 + ... + 38302923.

It is an arithmetic number, because the mean of its divisors is an integer number (1023971123160).

Almost surely, 2^{21455160224673} is an apocalyptic number.

It is an amenable number.

21455160224673 is a deficient number, since it is larger than the sum of its proper divisors (11311915716447).

21455160224673 is a wasteful number, since it uses less digits than its factorization.

21455160224673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568377.

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 21455160224673 in words is "twenty-one trillion, four hundred fifty-five billion, one hundred sixty million, two hundred twenty-four thousand, six hundred seventy-three".