21773348456552 has 64 divisors (see below), whose sum is σ = 51733142259840. Its totient is φ = 8344055174400.

The previous prime is 21773348456551. The next prime is 21773348456557. The reversal of 21773348456552 is 25565484337712.

It is not an unprimeable number, because it can be changed into a prime (21773348456551) 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 15 ways as a sum of consecutive naturals, for example, 289686563 + ... + 289761714.

It is an arithmetic number, because the mean of its divisors is an integer number (808330347810).

Almost surely, 2^{21773348456552} is an apocalyptic number.

21773348456552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21773348456552 is an abundant number, since it is smaller than the sum of its proper divisors (29959793803288).

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

21773348456552 is a wasteful number, since it uses less digits than its factorization.

21773348456552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579448362 (or 579448358 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 62.

The spelling of 21773348456552 in words is "twenty-one trillion, seven hundred seventy-three billion, three hundred forty-eight million, four hundred fifty-six thousand, five hundred fifty-two".