13531115050 has 48 divisors (see below), whose sum is σ = 27644391360. Its totient is φ = 4904634240.

The previous prime is 13531114979. The next prime is 13531115057. The reversal of 13531115050 is 5051113531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (13531115057) 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, 287787 + ... + 331486.

It is an arithmetic number, because the mean of its divisors is an integer number (575924820).

Almost surely, 2^13531115050 is an apocalyptic number.

13531115050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13531115050 is an abundant number, since it is smaller than the sum of its proper divisors (14113276310).

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

13531115050 is a wasteful number, since it uses less digits than its factorization.

13531115050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619327 (or 619322 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 25.

Adding to 13531115050 its reverse (5051113531), we get a palindrome (18582228581).

The spelling of 13531115050 in words is "thirteen billion, five hundred thirty-one million, one hundred fifteen thousand, fifty".