15120444345 has 8 divisors (see below), whose sum is σ = 24192710976. Its totient is φ = 8064236976.

The previous prime is 15120444341. The next prime is 15120444347. The reversal of 15120444345 is 54344402151.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15120444345 - 2² = 15120444341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15120444341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504014797 + ... + 504014826.

It is an arithmetic number, because the mean of its divisors is an integer number (3024088872).

Almost surely, 2^15120444345 is an apocalyptic number.

15120444345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15120444345 is a deficient number, since it is larger than the sum of its proper divisors (9072266631).

15120444345 is a wasteful number, since it uses less digits than its factorization.

15120444345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008029631.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 15120444345 its reverse (54344402151), we get a palindrome (69464846496).

The spelling of 15120444345 in words is "fifteen billion, one hundred twenty million, four hundred forty-four thousand, three hundred forty-five".