20852967438719 has 16 divisors (see below), whose sum is σ = 23064723712800. Its totient is φ = 18731351108736.

The previous prime is 20852967438691. The next prime is 20852967438763. The reversal of 20852967438719 is 91783476925802.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20852967438719 is a prime.

It is a super-2 number, since 2×20852967438719² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852967438119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69188024 + ... + 69488765.

It is an arithmetic number, because the mean of its divisors is an integer number (1441545232050).

It is a 1-persistent number, because it is pandigital, but 2⋅20852967438719 = 41705934877438 is not.

Almost surely, 2^{20852967438719} is an apocalyptic number.

20852967438719 is a deficient number, since it is larger than the sum of its proper divisors (2211756274081).

20852967438719 is a wasteful number, since it uses less digits than its factorization.

20852967438719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138677114.

The product of its (nonzero) digits is 365783040, while the sum is 71.

The spelling of 20852967438719 in words is "twenty trillion, eight hundred fifty-two billion, nine hundred sixty-seven million, four hundred thirty-eight thousand, seven hundred nineteen".