13151521243 has 8 divisors (see below), whose sum is σ = 15039889920. Its totient is φ = 11265547560.

The previous prime is 13151521231. The next prime is 13151521261. The reversal of 13151521243 is 34212515131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13151521243 is a prime.

It is a super-2 number, since 2×13151521243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13151521223) by changing a digit.

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, 586963 + ... + 608956.

It is an arithmetic number, because the mean of its divisors is an integer number (1879986240).

Almost surely, 2^13151521243 is an apocalyptic number.

13151521243 is a deficient number, since it is larger than the sum of its proper divisors (1888368677).

13151521243 is a wasteful number, since it uses less digits than its factorization.

13151521243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197497.

The product of its digits is 3600, while the sum is 28.

The spelling of 13151521243 in words is "thirteen billion, one hundred fifty-one million, five hundred twenty-one thousand, two hundred forty-three".