20254450057720 has 16 divisors (see below), whose sum is σ = 45572512629960. Its totient is φ = 8101780023072.

The previous prime is 20254450057643. The next prime is 20254450057727. The reversal of 20254450057720 is 2775005445202.

It is a super-2 number, since 2×20254450057720² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254450057727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253180625682 + ... + 253180625761.

Almost surely, 2^{20254450057720} is an apocalyptic number.

20254450057720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20254450057720 is an abundant number, since it is smaller than the sum of its proper divisors (25318062572240).

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

20254450057720 is a wasteful number, since it uses less digits than its factorization.

20254450057720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506361251454 (or 506361251450 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 43.

The spelling of 20254450057720 in words is "twenty trillion, two hundred fifty-four billion, four hundred fifty million, fifty-seven thousand, seven hundred twenty".