20617152236 has 12 divisors (see below), whose sum is σ = 37324155120. Its totient is φ = 9953107920.

The previous prime is 20617152191. The next prime is 20617152307. The reversal of 20617152236 is 63225171602.

It is a junction number, because it is equal to n+sod(n) for n = 20617152196 and 20617152205.

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, 88866920 + ... + 88867151.

It is an arithmetic number, because the mean of its divisors is an integer number (3110346260).

Almost surely, 2^20617152236 is an apocalyptic number.

It is an amenable number.

20617152236 is a deficient number, since it is larger than the sum of its proper divisors (16707002884).

20617152236 is a wasteful number, since it uses less digits than its factorization.

20617152236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177734104 (or 177734102 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 20617152236 in words is "twenty billion, six hundred seventeen million, one hundred fifty-two thousand, two hundred thirty-six".