20706875758 has 16 divisors (see below), whose sum is σ = 32413818240. Its totient is φ = 9902354616.

The previous prime is 20706875743. The next prime is 20706875801. The reversal of 20706875758 is 85757860702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20706875699 and 20706875708.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 941653 + ... + 963391.

It is an arithmetic number, because the mean of its divisors is an integer number (2025863640).

Almost surely, 2^20706875758 is an apocalyptic number.

20706875758 is a deficient number, since it is larger than the sum of its proper divisors (11706942482).

20706875758 is a wasteful number, since it uses less digits than its factorization.

20706875758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42471.

The product of its (nonzero) digits is 6585600, while the sum is 55.

The spelling of 20706875758 in words is "twenty billion, seven hundred six million, eight hundred seventy-five thousand, seven hundred fifty-eight".