21336628233072 has 160 divisors (see below), whose sum is σ = 58918973087232. Its totient is φ = 6629981274112.

The previous prime is 21336628233001. The next prime is 21336628233073. The reversal of 21336628233072 is 27033282663312.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21336628233073) 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, 504904168 + ... + 504946424.

Almost surely, 2^{21336628233072} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21336628233072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29459486543616).

21336628233072 is an abundant number, since it is smaller than the sum of its proper divisors (37582344854160).

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

21336628233072 is a wasteful number, since it uses less digits than its factorization.

21336628233072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48175 (or 48169 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 48.

The spelling of 21336628233072 in words is "twenty-one trillion, three hundred thirty-six billion, six hundred twenty-eight million, two hundred thirty-three thousand, seventy-two".