15045421045 has 4 divisors (see below), whose sum is σ = 18054505260. Its totient is φ = 12036336832.

The previous prime is 15045421031. The next prime is 15045421051. The reversal of 15045421045 is 54012454051.

It is a happy number.

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 3561941124 + 11483479921 = 59682^2 + 107161^2 .

It is a cyclic number.

It is not a de Polignac number, because 15045421045 - 2²⁷ = 14911203317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15045420998 and 15045421016.

It is a congruent number.

It is an unprimeable number.

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, 1504542100 + ... + 1504542109.

It is an arithmetic number, because the mean of its divisors is an integer number (4513626315).

Almost surely, 2^15045421045 is an apocalyptic number.

It is an amenable number.

15045421045 is a deficient number, since it is larger than the sum of its proper divisors (3009084215).

15045421045 is an equidigital number, since it uses as much as digits as its factorization.

15045421045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009084214.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 15045421045 its reverse (54012454051), we get a palindrome (69057875096).

The spelling of 15045421045 in words is "fifteen billion, forty-five million, four hundred twenty-one thousand, forty-five".