13520143400 has 24 divisors (see below), whose sum is σ = 31434333870. Its totient is φ = 5408057280.

The previous prime is 13520143393. The next prime is 13520143421. The reversal of 13520143400 is 434102531.

It can be written as a sum of positive squares in 3 ways, for example, as 13188684964 + 331458436 = 114842^2 + 18206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33800159 + ... + 33800558.

Almost surely, 2^13520143400 is an apocalyptic number.

13520143400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13520143400 is an abundant number, since it is smaller than the sum of its proper divisors (17914190470).

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

13520143400 is a wasteful number, since it uses less digits than its factorization.

13520143400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67600733 (or 67600724 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 13520143400 its reverse (434102531), we get a palindrome (13954245931).

The spelling of 13520143400 in words is "thirteen billion, five hundred twenty million, one hundred forty-three thousand, four hundred".