13209240888400 has 60 divisors (see below), whose sum is σ = 31763818352700. Its totient is φ = 5278931799040.

The previous prime is 13209240888383. The next prime is 13209240888413. The reversal of 13209240888400 is 488804290231.

It can be written as a sum of positive squares in 6 ways, for example, as 368026649104 + 12841214239296 = 606652^2 + 3583464^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14445085 + ... + 15332284.

It is an arithmetic number, because the mean of its divisors is an integer number (529396972545).

Almost surely, 2^{13209240888400} is an apocalyptic number.

13209240888400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13209240888400 is an abundant number, since it is smaller than the sum of its proper divisors (18554577464300).

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

13209240888400 is a wasteful number, since it uses less digits than its factorization.

13209240888400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29778496 (or 29778485 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 13209240888400 in words is "thirteen trillion, two hundred nine billion, two hundred forty million, eight hundred eighty-eight thousand, four hundred".