15321135250001 has 4 divisors (see below), whose sum is σ = 17509868857152. Its totient is φ = 13132401642852.

The previous prime is 15321135249997. The next prime is 15321135250079. The reversal of 15321135250001 is 10005253112351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15321135250001 - 2² = 15321135249997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15321135250081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094366803565 + ... + 1094366803578.

It is an arithmetic number, because the mean of its divisors is an integer number (4377467214288).

Almost surely, 2^{15321135250001} is an apocalyptic number.

It is an amenable number.

15321135250001 is a deficient number, since it is larger than the sum of its proper divisors (2188733607151).

15321135250001 is an equidigital number, since it uses as much as digits as its factorization.

15321135250001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188733607150.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 15321135250001 its reverse (10005253112351), we get a palindrome (25326388362352).

The spelling of 15321135250001 in words is "fifteen trillion, three hundred twenty-one billion, one hundred thirty-five million, two hundred fifty thousand, one".