20016730427520 has 256 divisors, whose sum is σ = 64804967884800. Its totient is φ = 5254118977536.

The previous prime is 20016730427501. The next prime is 20016730427521. The reversal of 20016730427520 is 2572403761002.

It is not an unprimeable number, because it can be changed into a prime (20016730427521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170646651 + ... + 170763909.

It is an arithmetic number, because the mean of its divisors is an integer number (253144405800).

Almost surely, 2^{20016730427520} is an apocalyptic number.

20016730427520 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 20016730427520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32402483942400).

20016730427520 is an abundant number, since it is smaller than the sum of its proper divisors (44788237457280).

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

20016730427520 is a wasteful number, since it uses less digits than its factorization.

20016730427520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118675 (or 118663 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 20016730427520 in words is "twenty trillion, sixteen billion, seven hundred thirty million, four hundred twenty-seven thousand, five hundred twenty".