15523001243213 has 8 divisors (see below), whose sum is σ = 17150732831808. Its totient is φ = 13974671195584.

The previous prime is 15523001243201. The next prime is 15523001243219. The reversal of 15523001243213 is 31234210032551.

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

It is a de Polignac number, because none of the positive numbers 2^k-15523001243213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15523001243213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15523001243219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19850384831 + ... + 19850385612.

It is an arithmetic number, because the mean of its divisors is an integer number (2143841603976).

Almost surely, 2^{15523001243213} is an apocalyptic number.

It is an amenable number.

15523001243213 is a deficient number, since it is larger than the sum of its proper divisors (1627731588595).

15523001243213 is a wasteful number, since it uses less digits than its factorization.

15523001243213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39700770483.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 15523001243213 its reverse (31234210032551), we get a palindrome (46757211275764).

The spelling of 15523001243213 in words is "fifteen trillion, five hundred twenty-three billion, one million, two hundred forty-three thousand, two hundred thirteen".