20530351120 has 40 divisors (see below), whose sum is σ = 47743265664. Its totient is φ = 8210385792.

The previous prime is 20530351097. The next prime is 20530351157. The reversal of 20530351120 is 2115303502.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×20530351120² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20530351091 and 20530351100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388527 + ... + 438193.

Almost surely, 2^20530351120 is an apocalyptic number.

20530351120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20530351120 is an abundant number, since it is smaller than the sum of its proper divisors (27212914544).

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

20530351120 is a wasteful number, since it uses less digits than its factorization.

20530351120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54847 (or 54841 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 20530351120 its reverse (2115303502), we get a palindrome (22645654622).

The spelling of 20530351120 in words is "twenty billion, five hundred thirty million, three hundred fifty-one thousand, one hundred twenty".