20243055517620 has 96 divisors (see below), whose sum is σ = 61063457548800. Its totient is φ = 4981039902720.

The previous prime is 20243055517603. The next prime is 20243055517627. The reversal of 20243055517620 is 2671555034202.

It is a super-2 number, since 2×20243055517620² (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 (20243055517627) 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, 2774845 + ... + 6941604.

It is an arithmetic number, because the mean of its divisors is an integer number (636077682800).

Almost surely, 2^{20243055517620} is an apocalyptic number.

20243055517620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243055517620 is an abundant number, since it is smaller than the sum of its proper divisors (40820402031180).

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

20243055517620 is a wasteful number, since it uses less digits than its factorization.

20243055517620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719145 (or 9719143 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 20243055517620 in words is "twenty trillion, two hundred forty-three billion, fifty-five million, five hundred seventeen thousand, six hundred twenty".