20310521055132 has 96 divisors (see below), whose sum is σ = 59088201822720. Its totient is φ = 5275187723520.

The previous prime is 20310521055107. The next prime is 20310521055193. The reversal of 20310521055132 is 23155012501302.

It is a self number, because there is not a number n which added to its sum of digits gives 20310521055132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17661094 + ... + 18775922.

It is an arithmetic number, because the mean of its divisors is an integer number (615502102320).

Almost surely, 2^{20310521055132} is an apocalyptic number.

20310521055132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20310521055132 is an abundant number, since it is smaller than the sum of its proper divisors (38777680767588).

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

20310521055132 is a wasteful number, since it uses less digits than its factorization.

20310521055132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134571 (or 1134569 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 20310521055132 its reverse (23155012501302), we get a palindrome (43465533556434).

The spelling of 20310521055132 in words is "twenty trillion, three hundred ten billion, five hundred twenty-one million, fifty-five thousand, one hundred thirty-two".