13121272734 has 16 divisors (see below), whose sum is σ = 26243667840. Its totient is φ = 4373570520.

The previous prime is 13121272729. The next prime is 13121272751. The reversal of 13121272734 is 43727212131.

It is a junction number, because it is equal to n+sod(n) for n = 13121272695 and 13121272704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255297 + ... + 302355.

It is an arithmetic number, because the mean of its divisors is an integer number (1640229240).

Almost surely, 2^13121272734 is an apocalyptic number.

13121272734 is an abundant number, since it is smaller than the sum of its proper divisors (13122395106).

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

13121272734 is a wasteful number, since it uses less digits than its factorization.

13121272734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93535.

The product of its digits is 14112, while the sum is 33.

Adding to 13121272734 its reverse (43727212131), we get a palindrome (56848484865).

The spelling of 13121272734 in words is "thirteen billion, one hundred twenty-one million, two hundred seventy-two thousand, seven hundred thirty-four".