20858006334 has 64 divisors (see below), whose sum is σ = 47029248000. Its totient is φ = 6109836000.

The previous prime is 20858006311. The next prime is 20858006341. The reversal of 20858006334 is 43360085802.

It is a junction number, because it is equal to n+sod(n) for n = 20858006292 and 20858006301.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1981417 + ... + 1991915.

It is an arithmetic number, because the mean of its divisors is an integer number (734832000).

Almost surely, 2^20858006334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20858006334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23514624000).

20858006334 is an abundant number, since it is smaller than the sum of its proper divisors (26171241666).

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

20858006334 is a wasteful number, since it uses less digits than its factorization.

20858006334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 20858006334 in words is "twenty billion, eight hundred fifty-eight million, six thousand, three hundred thirty-four".