15021013345 has 16 divisors (see below), whose sum is σ = 19481873040. Its totient is φ = 11052382464.

The previous prime is 15021013303. The next prime is 15021013349. The reversal of 15021013345 is 54331012051.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1700160289 + 13320853056 = 41233^2 + 115416^2 .

It is a cyclic number.

It is not a de Polignac number, because 15021013345 - 2¹⁷ = 15020882273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15021013349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399130 + ... + 435139.

It is an arithmetic number, because the mean of its divisors is an integer number (1217617065).

Almost surely, 2^15021013345 is an apocalyptic number.

It is an amenable number.

15021013345 is a deficient number, since it is larger than the sum of its proper divisors (4460859695).

15021013345 is a wasteful number, since it uses less digits than its factorization.

15021013345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834564.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 15021013345 its reverse (54331012051), we get a palindrome (69352025396).

The spelling of 15021013345 in words is "fifteen billion, twenty-one million, thirteen thousand, three hundred forty-five".