20265369600 has 816 divisors, whose sum is σ = 83214356480. Its totient is φ = 4246732800.

The previous prime is 20265369577. The next prime is 20265369613. The reversal of 20265369600 is 696356202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 653721585 + ... + 653721615.

Almost surely, 2^20265369600 is an apocalyptic number.

20265369600 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 20265369600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41607178240).

20265369600 is an abundant number, since it is smaller than the sum of its proper divisors (62948986880).

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

20265369600 is an equidigital number, since it uses as much as digits as its factorization.

20265369600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 20265369600 in words is "twenty billion, two hundred sixty-five million, three hundred sixty-nine thousand, six hundred".