20246868408 has 64 divisors (see below), whose sum is σ = 54569763360. Its totient is φ = 6223067136.

The previous prime is 20246868391. The next prime is 20246868409. The reversal of 20246868408 is 80486864202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20246868409) 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 in 15 ways as a sum of consecutive naturals, for example, 257716 + ... + 326972.

Almost surely, 2^20246868408 is an apocalyptic number.

It is an amenable number.

20246868408 is an abundant number, since it is smaller than the sum of its proper divisors (34322894952).

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

20246868408 is a wasteful number, since it uses less digits than its factorization.

20246868408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70216 (or 70212 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 48.

The spelling of 20246868408 in words is "twenty billion, two hundred forty-six million, eight hundred sixty-eight thousand, four hundred eight".