20385388716 has 96 divisors (see below), whose sum is σ = 59403240960. Its totient is φ = 5285952000.

The previous prime is 20385388703. The next prime is 20385388729. The reversal of 20385388716 is 61788358302.

It is an interprime number because it is at equal distance from previous prime (20385388703) and next prime (20385388729).

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, 536970 + ... + 573678.

It is an arithmetic number, because the mean of its divisors is an integer number (618783760).

Almost surely, 2^20385388716 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 20385388716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29701620480).

20385388716 is an abundant number, since it is smaller than the sum of its proper divisors (39017852244).

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

20385388716 is a wasteful number, since it uses less digits than its factorization.

20385388716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37335 (or 37333 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 20385388716 in words is "twenty billion, three hundred eighty-five million, three hundred eighty-eight thousand, seven hundred sixteen".