20378614560 has 192 divisors, whose sum is σ = 67232229120. Its totient is φ = 5178736640.

The previous prime is 20378614517. The next prime is 20378614651. The reversal of 20378614560 is 6541687302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3098956 + ... + 3105524.

It is an arithmetic number, because the mean of its divisors is an integer number (350167860).

Almost surely, 2^20378614560 is an apocalyptic number.

20378614560 is a gapful number since it is divisible by the number (20) 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 20378614560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33616114560).

20378614560 is an abundant number, since it is smaller than the sum of its proper divisors (46853614560).

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

20378614560 is a wasteful number, since it uses less digits than its factorization.

20378614560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891 (or 6883 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 20378614560 in words is "twenty billion, three hundred seventy-eight million, six hundred fourteen thousand, five hundred sixty".