13405502123220 has 48 divisors (see below), whose sum is σ = 38450903658048. Its totient is φ = 3487610307840.

The previous prime is 13405502123203. The next prime is 13405502123333. The reversal of 13405502123220 is 2232120550431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2724693094 + ... + 2724698013.

It is an arithmetic number, because the mean of its divisors is an integer number (801060492876).

Almost surely, 2^{13405502123220} is an apocalyptic number.

13405502123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13405502123220 is an abundant number, since it is smaller than the sum of its proper divisors (25045401534828).

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

13405502123220 is a wasteful number, since it uses less digits than its factorization.

13405502123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449391160 (or 5449391158 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 13405502123220 its reverse (2232120550431), we get a palindrome (15637622673651).

The spelling of 13405502123220 in words is "thirteen trillion, four hundred five billion, five hundred two million, one hundred twenty-three thousand, two hundred twenty".