13105405521400 has 48 divisors (see below), whose sum is σ = 30472391595240. Its totient is φ = 5241762422400.

The previous prime is 13105405521287. The next prime is 13105405521401. The reversal of 13105405521400 is 412550450131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13105405521401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137310 + ... + 5121490.

Almost surely, 2^{13105405521400} is an apocalyptic number.

13105405521400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13105405521400 is an abundant number, since it is smaller than the sum of its proper divisors (17366986073840).

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

13105405521400 is a wasteful number, since it uses less digits than its factorization.

13105405521400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997344 (or 4997335 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 13105405521400 its reverse (412550450131), we get a palindrome (13517955971531).

The spelling of 13105405521400 in words is "thirteen trillion, one hundred five billion, four hundred five million, five hundred twenty-one thousand, four hundred".