15471130421 has 4 divisors (see below), whose sum is σ = 15471810732. Its totient is φ = 15470450112.

The previous prime is 15471130397. The next prime is 15471130439. The reversal of 15471130421 is 12403117451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12403117451 = 149 ⋅83242399.

It can be written as a sum of positive squares in 2 ways, for example, as 403567921 + 15067562500 = 20089^2 + 122750^2 .

It is a cyclic number.

It is not a de Polignac number, because 15471130421 - 2¹⁰ = 15471129397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15471130121) 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 3 ways as a sum of consecutive naturals, for example, 304820 + ... + 351933.

It is an arithmetic number, because the mean of its divisors is an integer number (3867952683).

Almost surely, 2^15471130421 is an apocalyptic number.

It is an amenable number.

15471130421 is a deficient number, since it is larger than the sum of its proper divisors (680311).

15471130421 is an equidigital number, since it uses as much as digits as its factorization.

15471130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680310.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 15471130421 its reverse (12403117451), we get a palindrome (27874247872).

The spelling of 15471130421 in words is "fifteen billion, four hundred seventy-one million, one hundred thirty thousand, four hundred twenty-one".