21050146266 has 16 divisors (see below), whose sum is σ = 44576780544. Its totient is φ = 6603967424.

The previous prime is 21050146259. The next prime is 21050146267. The reversal of 21050146266 is 66264105012.

It is not an unprimeable number, because it can be changed into a prime (21050146267) 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 7 ways as a sum of consecutive naturals, for example, 103186890 + ... + 103187093.

It is an arithmetic number, because the mean of its divisors is an integer number (2786048784).

Almost surely, 2^21050146266 is an apocalyptic number.

21050146266 is an abundant number, since it is smaller than the sum of its proper divisors (23526634278).

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

21050146266 is a wasteful number, since it uses less digits than its factorization.

21050146266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206374005.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 21050146266 in words is "twenty-one billion, fifty million, one hundred forty-six thousand, two hundred sixty-six".