20693836826 has 16 divisors (see below), whose sum is σ = 33735193800. Its totient is φ = 9463376448.

The previous prime is 20693836799. The next prime is 20693836853. The reversal of 20693836826 is 62863839602.

It is an interprime number because it is at equal distance from previous prime (20693836799) and next prime (20693836853).

It can be written as a sum of positive squares in 4 ways, for example, as 11697504025 + 8996332801 = 108155^2 + 94849^2 .

It is a super-2 number, since 2×20693836826² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3648161 + ... + 3653828.

Almost surely, 2^20693836826 is an apocalyptic number.

20693836826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20693836826 is a deficient number, since it is larger than the sum of its proper divisors (13041356974).

20693836826 is a wasteful number, since it uses less digits than its factorization.

20693836826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302113.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 20693836826 in words is "twenty billion, six hundred ninety-three million, eight hundred thirty-six thousand, eight hundred twenty-six".