21367633749488 has 80 divisors (see below), whose sum is σ = 47145098687232. Its totient is φ = 9311079168000.

The previous prime is 21367633749467. The next prime is 21367633749541. The reversal of 21367633749488 is 88494733676312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40148303 + ... + 40677038.

Almost surely, 2^{21367633749488} is an apocalyptic number.

It is an amenable number.

21367633749488 is an abundant number, since it is smaller than the sum of its proper divisors (25777464937744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21367633749488 is a wasteful number, since it uses less digits than its factorization.

21367633749488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80825434 (or 80825428 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 71.

The spelling of 21367633749488 in words is "twenty-one trillion, three hundred sixty-seven billion, six hundred thirty-three million, seven hundred forty-nine thousand, four hundred eighty-eight".