15120053213445 has 24 divisors (see below), whose sum is σ = 26210393493336. Its totient is φ = 8063320301568.

The previous prime is 15120053213437. The next prime is 15120053213449. The reversal of 15120053213445 is 54431235002151.

15120053213445 is a `hidden beast` number, since 1 + 5 + 1 + 200 + 5 + 3 + 2 + 1 + 3 + 445 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1219332726756 + 13900720486689 = 1104234^2 + 3728367^2 .

It is not a de Polignac number, because 15120053213445 - 2³ = 15120053213437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120053213449) 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 23 ways as a sum of consecutive naturals, for example, 14233264 + ... + 15258633.

It is an arithmetic number, because the mean of its divisors is an integer number (1092099728889).

Almost surely, 2^{15120053213445} is an apocalyptic number.

15120053213445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15120053213445 is a deficient number, since it is larger than the sum of its proper divisors (11090340279891).

15120053213445 is a wasteful number, since it uses less digits than its factorization.

15120053213445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29503301 (or 29503298 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 15120053213445 its reverse (54431235002151), we get a palindrome (69551288215596).

The spelling of 15120053213445 in words is "fifteen trillion, one hundred twenty billion, fifty-three million, two hundred thirteen thousand, four hundred forty-five".