21466261350 has 72 divisors (see below), whose sum is σ = 59079390552. Its totient is φ = 5584713600.

The previous prime is 21466261337. The next prime is 21466261357. The reversal of 21466261350 is 5316266412.

21466261350 is a `hidden beast` number, since 2 + 1 + 46 + 6 + 261 + 350 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21466261357) 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 35 ways as a sum of consecutive naturals, for example, 563292 + ... + 600191.

It is an arithmetic number, because the mean of its divisors is an integer number (820547091).

Almost surely, 2^21466261350 is an apocalyptic number.

21466261350 is an abundant number, since it is smaller than the sum of its proper divisors (37613129202).

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

21466261350 is a wasteful number, since it uses less digits than its factorization.

21466261350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163542 (or 1163534 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 21466261350 in words is "twenty-one billion, four hundred sixty-six million, two hundred sixty-one thousand, three hundred fifty".