13530004473 has 4 divisors (see below), whose sum is σ = 18040005968. Its totient is φ = 9020002980.

The previous prime is 13530004463. The next prime is 13530004483. The reversal of 13530004473 is 37440003531.

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 an interprime number because it is at equal distance from previous prime (13530004463) and next prime (13530004483).

It is not a de Polignac number, because 13530004473 - 2⁴ = 13530004457 is a prime.

It is a super-2 number, since 2×13530004473² (a number of 21 digits) contains 22 as substring.

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 13530004473.

It is not an unprimeable number, because it can be changed into a prime (13530004463) 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, 2255000743 + ... + 2255000748.

It is an arithmetic number, because the mean of its divisors is an integer number (4510001492).

Almost surely, 2^13530004473 is an apocalyptic number.

It is an amenable number.

13530004473 is a deficient number, since it is larger than the sum of its proper divisors (4510001495).

13530004473 is an equidigital number, since it uses as much as digits as its factorization.

13530004473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510001494.

The product of its (nonzero) digits is 15120, while the sum is 30.

The spelling of 13530004473 in words is "thirteen billion, five hundred thirty million, four thousand, four hundred seventy-three".