21355466401050 has 24 divisors (see below), whose sum is σ = 52961556674976. Its totient is φ = 5694791040240.

The previous prime is 21355466401039. The next prime is 21355466401051. The reversal of 21355466401050 is 5010466455312.

It is a super-2 number, since 2×21355466401050² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21355466400993 and 21355466401011.

It is not an unprimeable number, because it can be changed into a prime (21355466401051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71184887854 + ... + 71184888153.

It is an arithmetic number, because the mean of its divisors is an integer number (2206731528124).

Almost surely, 2^{21355466401050} is an apocalyptic number.

21355466401050 is an abundant number, since it is smaller than the sum of its proper divisors (31606090273926).

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

21355466401050 is a wasteful number, since it uses less digits than its factorization.

21355466401050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142369776022 (or 142369776017 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 21355466401050 in words is "twenty-one trillion, three hundred fifty-five billion, four hundred sixty-six million, four hundred one thousand, fifty".