20536826686 has 8 divisors (see below), whose sum is σ = 31087857240. Its totient is φ = 10174207608.

The previous prime is 20536826663. The next prime is 20536826699. The reversal of 20536826686 is 68662863502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20536826686² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47102596 + ... + 47103031.

It is an arithmetic number, because the mean of its divisors is an integer number (3885982155).

Almost surely, 2^20536826686 is an apocalyptic number.

20536826686 is a deficient number, since it is larger than the sum of its proper divisors (10551030554).

20536826686 is a wasteful number, since it uses less digits than its factorization.

20536826686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94205738.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 20536826686 in words is "twenty billion, five hundred thirty-six million, eight hundred twenty-six thousand, six hundred eighty-six".