21254880180304 has 20 divisors (see below), whose sum is σ = 41411393652960. Its totient is φ = 10568068915040.

The previous prime is 21254880180271. The next prime is 21254880180307. The reversal of 21254880180304 is 40308108845212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21254880180307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710695492 + ... + 3710701219.

It is an arithmetic number, because the mean of its divisors is an integer number (2070569682648).

Almost surely, 2^{21254880180304} is an apocalyptic number.

It is an amenable number.

21254880180304 is a deficient number, since it is larger than the sum of its proper divisors (20156513472656).

21254880180304 is a wasteful number, since it uses less digits than its factorization.

21254880180304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7421396898 (or 7421396892 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 21254880180304 in words is "twenty-one trillion, two hundred fifty-four billion, eight hundred eighty million, one hundred eighty thousand, three hundred four".