13215400143 has 24 divisors (see below), whose sum is σ = 20507329584. Its totient is φ = 7538192640.

The previous prime is 13215400123. The next prime is 13215400171. The reversal of 13215400143 is 34100451231.

It is a happy number.

It is not a de Polignac number, because 13215400143 - 2¹⁴ = 13215383759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215400103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1064596 + ... + 1076937.

It is an arithmetic number, because the mean of its divisors is an integer number (854472066).

Almost surely, 2^13215400143 is an apocalyptic number.

13215400143 is a deficient number, since it is larger than the sum of its proper divisors (7291929441).

13215400143 is a wasteful number, since it uses less digits than its factorization.

13215400143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141575 (or 2141564 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 13215400143 its reverse (34100451231), we get a palindrome (47315851374).

The spelling of 13215400143 in words is "thirteen billion, two hundred fifteen million, four hundred thousand, one hundred forty-three".