20739676859 has 16 divisors (see below), whose sum is σ = 24037866720. Its totient is φ = 17712092160.

The previous prime is 20739676807. The next prime is 20739676889. The reversal of 20739676859 is 95867693702.

It is a cyclic number.

It is not a de Polignac number, because 20739676859 - 2¹⁶ = 20739611323 is a prime.

It is a super-3 number, since 3×20739676859³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20739676889) 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, 866774 + ... + 890379.

It is an arithmetic number, because the mean of its divisors is an integer number (1502366670).

Almost surely, 2^20739676859 is an apocalyptic number.

20739676859 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20739676859 is a deficient number, since it is larger than the sum of its proper divisors (3298189861).

20739676859 is a wasteful number, since it uses less digits than its factorization.

20739676859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757230.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 20739676859 in words is "twenty billion, seven hundred thirty-nine million, six hundred seventy-six thousand, eight hundred fifty-nine".