13125405231020 has 96 divisors (see below), whose sum is σ = 28549877690880. Its totient is φ = 5062714675200.

The previous prime is 13125405231007. The next prime is 13125405231091. The reversal of 13125405231020 is 2013250452131.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2427481157 + ... + 2427486563.

It is an arithmetic number, because the mean of its divisors is an integer number (297394559280).

Almost surely, 2^{13125405231020} is an apocalyptic number.

13125405231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13125405231020 is an abundant number, since it is smaller than the sum of its proper divisors (15424472459860).

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

13125405231020 is a wasteful number, since it uses less digits than its factorization.

13125405231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963 (or 9961 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 13125405231020 its reverse (2013250452131), we get a palindrome (15138655683151).

The spelling of 13125405231020 in words is "thirteen trillion, one hundred twenty-five billion, four hundred five million, two hundred thirty-one thousand, twenty".