21356326227620 has 24 divisors (see below), whose sum is σ = 46798210517184. Its totient is φ = 8171116121696.

The previous prime is 21356326227619. The next prime is 21356326227637. The reversal of 21356326227620 is 2672262365312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23213397614 + ... + 23213398533.

It is an arithmetic number, because the mean of its divisors is an integer number (1949925438216).

Almost surely, 2^{21356326227620} is an apocalyptic number.

21356326227620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21356326227620 is an abundant number, since it is smaller than the sum of its proper divisors (25441884289564).

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

21356326227620 is a wasteful number, since it uses less digits than its factorization.

21356326227620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46426796179 (or 46426796177 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 47.

The spelling of 21356326227620 in words is "twenty-one trillion, three hundred fifty-six billion, three hundred twenty-six million, two hundred twenty-seven thousand, six hundred twenty".