15130133501621 has 4 divisors (see below), whose sum is σ = 15499161148044. Its totient is φ = 14761105855200.

The previous prime is 15130133501603. The next prime is 15130133501677. The reversal of 15130133501621 is 12610533103151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2459658988900 + 12670474512721 = 1568330^2 + 3559561^2 .

It is a cyclic number.

It is not a de Polignac number, because 15130133501621 - 2¹⁰ = 15130133500597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15130133501521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184513823150 + ... + 184513823231.

It is an arithmetic number, because the mean of its divisors is an integer number (3874790287011).

Almost surely, 2^{15130133501621} is an apocalyptic number.

It is an amenable number.

15130133501621 is a deficient number, since it is larger than the sum of its proper divisors (369027646423).

15130133501621 is an equidigital number, since it uses as much as digits as its factorization.

15130133501621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369027646422.

The product of its (nonzero) digits is 8100, while the sum is 32.

Adding to 15130133501621 its reverse (12610533103151), we get a palindrome (27740666604772).

The spelling of 15130133501621 in words is "fifteen trillion, one hundred thirty billion, one hundred thirty-three million, five hundred one thousand, six hundred twenty-one".