20662333406 has 48 divisors (see below), whose sum is σ = 38283047712. Its totient is φ = 8292546240.

The previous prime is 20662333387. The next prime is 20662333421. The reversal of 20662333406 is 60433326602.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70421 + ... + 215136.

It is an arithmetic number, because the mean of its divisors is an integer number (797563494).

Almost surely, 2^20662333406 is an apocalyptic number.

20662333406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20662333406 is a deficient number, since it is larger than the sum of its proper divisors (17620714306).

20662333406 is a wasteful number, since it uses less digits than its factorization.

20662333406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285617 (or 285606 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 35.

The spelling of 20662333406 in words is "twenty billion, six hundred sixty-two million, three hundred thirty-three thousand, four hundred six".