20255867236352 has 104 divisors (see below), whose sum is σ = 44217904508400. Its totient is φ = 9201236705280.

The previous prime is 20255867236307. The next prime is 20255867236379. The reversal of 20255867236352 is 25363276855202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69646628 + ... + 69936860.

Almost surely, 2^{20255867236352} is an apocalyptic number.

20255867236352 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 20255867236352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22108952254200).

20255867236352 is an abundant number, since it is smaller than the sum of its proper divisors (23962037272048).

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

20255867236352 is a wasteful number, since it uses less digits than its factorization.

20255867236352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291817 (or 291795 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 56.

The spelling of 20255867236352 in words is "twenty trillion, two hundred fifty-five billion, eight hundred sixty-seven million, two hundred thirty-six thousand, three hundred fifty-two".