20678080896 has 512 divisors, whose sum is σ = 69374361600. Its totient is φ = 6009292800.

The previous prime is 20678080807. The next prime is 20678080903. The reversal of 20678080896 is 69808087602.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 126859311 + ... + 126859473.

It is an arithmetic number, because the mean of its divisors is an integer number (135496800).

Almost surely, 2^20678080896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20678080896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34687180800).

20678080896 is an abundant number, since it is smaller than the sum of its proper divisors (48696280704).

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

20678080896 is a wasteful number, since it uses less digits than its factorization.

20678080896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 20678080896 in words is "twenty billion, six hundred seventy-eight million, eighty thousand, eight hundred ninety-six".