20102256381592 has 128 divisors (see below), whose sum is σ = 49468625856000. Its totient is φ = 7419375912960.

The previous prime is 20102256381547. The next prime is 20102256381601. The reversal of 20102256381592 is 29518365220102.

It is a congruent number.

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, 232737678 + ... + 232824034.

It is an arithmetic number, because the mean of its divisors is an integer number (386473639500).

Almost surely, 2^{20102256381592} is an apocalyptic number.

20102256381592 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 20102256381592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24734312928000).

20102256381592 is an abundant number, since it is smaller than the sum of its proper divisors (29366369474408).

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

20102256381592 is a wasteful number, since it uses less digits than its factorization.

20102256381592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106289 (or 106285 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 20102256381592 in words is "twenty trillion, one hundred two billion, two hundred fifty-six million, three hundred eighty-one thousand, five hundred ninety-two".