20343835836 has 36 divisors (see below), whose sum is σ = 51495497872. Its totient is φ = 6771942144.

The previous prime is 20343835753. The next prime is 20343835861. The reversal of 20343835836 is 63853834302.

20343835836 is a `hidden beast` number, since 2 + 0 + 34 + 38 + 3 + 583 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 20343835791 and 20343835800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362485 + ... + 414828.

Almost surely, 2^20343835836 is an apocalyptic number.

It is an amenable number.

20343835836 is an abundant number, since it is smaller than the sum of its proper divisors (31151662036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20343835836 is a wasteful number, since it uses less digits than its factorization.

20343835836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778050 (or 778045 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 20343835836 in words is "twenty billion, three hundred forty-three million, eight hundred thirty-five thousand, eight hundred thirty-six".