13121484850 has 36 divisors (see below), whose sum is σ = 25848185454. Its totient is φ = 4938595840.

The previous prime is 13121484847. The next prime is 13121484907. The reversal of 13121484850 is 5848412131.

It can be written as a sum of positive squares in 9 ways, for example, as 11449 + 13121473401 = 107^2 + 114549^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3337686 + ... + 3341614.

Almost surely, 2^13121484850 is an apocalyptic number.

13121484850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121484850 is a deficient number, since it is larger than the sum of its proper divisors (12726700604).

13121484850 is an frugal number, since it uses more digits than its factorization.

13121484850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887 (or 3953 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

Adding to 13121484850 its reverse (5848412131), we get a palindrome (18969896981).

The spelling of 13121484850 in words is "thirteen billion, one hundred twenty-one million, four hundred eighty-four thousand, eight hundred fifty".