20858733807 has 16 divisors (see below), whose sum is σ = 28776576000. Its totient is φ = 13423554144.

The previous prime is 20858733761. The next prime is 20858733851. The reversal of 20858733807 is 70833785802.

It is not a de Polignac number, because 20858733807 - 2¹⁴ = 20858717423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20858733807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858733607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454794 + ... + 498552.

It is an arithmetic number, because the mean of its divisors is an integer number (1798536000).

Almost surely, 2^20858733807 is an apocalyptic number.

20858733807 is a deficient number, since it is larger than the sum of its proper divisors (7917842193).

20858733807 is a wasteful number, since it uses less digits than its factorization.

20858733807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49270.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 20858733807 in words is "twenty billion, eight hundred fifty-eight million, seven hundred thirty-three thousand, eight hundred seven".