20457552254720 has 144 divisors (see below), whose sum is σ = 56498149874880. Its totient is φ = 6951946616832.

The previous prime is 20457552254693. The next prime is 20457552254749. The reversal of 20457552254720 is 2745225575402.

It is a super-2 number, since 2×20457552254720² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9090215 + ... + 11115174.

It is an arithmetic number, because the mean of its divisors is an integer number (392348263020).

Almost surely, 2^{20457552254720} is an apocalyptic number.

20457552254720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20457552254720 is an abundant number, since it is smaller than the sum of its proper divisors (36040597620160).

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

20457552254720 is a wasteful number, since it uses less digits than its factorization.

20457552254720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20205530 (or 20205516 counting only the distinct ones).

The product of its (nonzero) digits is 7840000, while the sum is 50.

The spelling of 20457552254720 in words is "twenty trillion, four hundred fifty-seven billion, five hundred fifty-two million, two hundred fifty-four thousand, seven hundred twenty".