20262254705140 has 96 divisors (see below), whose sum is σ = 48919899974400. Its totient is φ = 6905590256640.

The previous prime is 20262254705123. The next prime is 20262254705141. The reversal of 20262254705140 is 4150745226202.

It is a junction number, because it is equal to n+sod(n) for n = 20262254705093 and 20262254705102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20262254705141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65528016 + ... + 65836504.

It is an arithmetic number, because the mean of its divisors is an integer number (509582291400).

Almost surely, 2^{20262254705140} is an apocalyptic number.

20262254705140 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 20262254705140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24459949987200).

20262254705140 is an abundant number, since it is smaller than the sum of its proper divisors (28657645269260).

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

20262254705140 is a wasteful number, since it uses less digits than its factorization.

20262254705140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311305 (or 311303 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 20262254705140 in words is "twenty trillion, two hundred sixty-two billion, two hundred fifty-four million, seven hundred five thousand, one hundred forty".