15123052513 has 8 divisors (see below), whose sum is σ = 15546061440. Its totient is φ = 14700795120.

The previous prime is 15123052487. The next prime is 15123052537. The reversal of 15123052513 is 31525032151.

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

It is a cyclic number.

It is not a de Polignac number, because 15123052513 - 2⁵ = 15123052481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15123052013) 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, 146953 + ... + 227686.

It is an arithmetic number, because the mean of its divisors is an integer number (1943257680).

Almost surely, 2^15123052513 is an apocalyptic number.

It is an amenable number.

15123052513 is a deficient number, since it is larger than the sum of its proper divisors (423008927).

15123052513 is a wasteful number, since it uses less digits than its factorization.

15123052513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375767.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 15123052513 its reverse (31525032151), we get a palindrome (46648084664).

The spelling of 15123052513 in words is "fifteen billion, one hundred twenty-three million, fifty-two thousand, five hundred thirteen".