20840675248 has 10 divisors (see below), whose sum is σ = 40378808324. Its totient is φ = 10420337616.

The previous prime is 20840675239. The next prime is 20840675249. The reversal of 20840675248 is 84257604802.

It is a junction number, because it is equal to n+sod(n) for n = 20840675198 and 20840675207.

It is not an unprimeable number, because it can be changed into a prime (20840675249) by changing a digit.

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 as a sum of consecutive naturals, namely, 651271086 + ... + 651271117.

Almost surely, 2^20840675248 is an apocalyptic number.

It is an amenable number.

20840675248 is a deficient number, since it is larger than the sum of its proper divisors (19538133076).

20840675248 is a wasteful number, since it uses less digits than its factorization.

20840675248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302542211 (or 1302542205 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 46.

The spelling of 20840675248 in words is "twenty billion, eight hundred forty million, six hundred seventy-five thousand, two hundred forty-eight".