13515233140 has 48 divisors (see below), whose sum is σ = 30285097920. Its totient is φ = 5051393280.

The previous prime is 13515233131. The next prime is 13515233141. The reversal of 13515233140 is 4133251531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13515233099 and 13515233108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13515233141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215866 + ... + 271345.

It is an arithmetic number, because the mean of its divisors is an integer number (630939540).

Almost surely, 2^13515233140 is an apocalyptic number.

13515233140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13515233140 is an abundant number, since it is smaller than the sum of its proper divisors (16769864780).

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

13515233140 is a wasteful number, since it uses less digits than its factorization.

13515233140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487312 (or 487310 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 13515233140 its reverse (4133251531), we get a palindrome (17648484671).

The spelling of 13515233140 in words is "thirteen billion, five hundred fifteen million, two hundred thirty-three thousand, one hundred forty".