15042150521 has 2 divisors, whose sum is σ = 15042150522. Its totient is φ = 15042150520.

The previous prime is 15042150493. The next prime is 15042150631. The reversal of 15042150521 is 12505124051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14150292025 + 891858496 = 118955^2 + 29864^2 .

It is a cyclic number.

It is not a de Polignac number, because 15042150521 - 2¹⁸ = 15041888377 is a prime.

It is not a weakly prime, because it can be changed into another prime (15042150421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7521075260 + 7521075261.

It is an arithmetic number, because the mean of its divisors is an integer number (7521075261).

Almost surely, 2^15042150521 is an apocalyptic number.

It is an amenable number.

15042150521 is a deficient number, since it is larger than the sum of its proper divisors (1).

15042150521 is an equidigital number, since it uses as much as digits as its factorization.

15042150521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 15042150521 its reverse (12505124051), we get a palindrome (27547274572).

The spelling of 15042150521 in words is "fifteen billion, forty-two million, one hundred fifty thousand, five hundred twenty-one".