20102215987392 has 896 divisors, whose sum is σ = 73456424681472. Its totient is φ = 4692236697600.

The previous prime is 20102215987379. The next prime is 20102215987393. The reversal of 20102215987392 is 29378951220102.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (20102215987393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 484288303 + ... + 484329809.

It is an arithmetic number, because the mean of its divisors is an integer number (81982616832).

Almost surely, 2^{20102215987392} is an apocalyptic number.

20102215987392 is a gapful number since it is divisible by the number (22) 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 20102215987392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36728212340736).

20102215987392 is an abundant number, since it is smaller than the sum of its proper divisors (53354208694080).

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

20102215987392 is a wasteful number, since it uses less digits than its factorization.

20102215987392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41645 (or 41635 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 20102215987392 in words is "twenty trillion, one hundred two billion, two hundred fifteen million, nine hundred eighty-seven thousand, three hundred ninety-two".