20102378569728 has 600 divisors, whose sum is σ = 67350636033408. Its totient is φ = 5301321596928.

The previous prime is 20102378569723. The next prime is 20102378569733. The reversal of 20102378569728 is 82796587320102.

It is an interprime number because it is at equal distance from previous prime (20102378569723) and next prime (20102378569733).

It is not an unprimeable number, because it can be changed into a prime (20102378569723) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1534174825 + ... + 1534187927.

Almost surely, 2^{20102378569728} is an apocalyptic number.

20102378569728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20102378569728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33675318016704).

20102378569728 is an abundant number, since it is smaller than the sum of its proper divisors (47248257463680).

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

20102378569728 is an frugal number, since it uses more digits than its factorization.

20102378569728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175 (or 13128 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 20102378569728 in words is "twenty trillion, one hundred two billion, three hundred seventy-eight million, five hundred sixty-nine thousand, seven hundred twenty-eight".