515023015013 has 16 divisors (see below), whose sum is σ = 558054819840. Its totient is φ = 472487805504.

The previous prime is 515023014967. The next prime is 515023015151. The reversal of 515023015013 is 310510320515.

It is a happy number.

It is not a de Polignac number, because 515023015013 - 2³⁸ = 240145108069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515023045013) 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, 1226303 + ... + 1591811.

It is an arithmetic number, because the mean of its divisors is an integer number (34878426240).

Almost surely, 2^515023015013 is an apocalyptic number.

It is an amenable number.

515023015013 is a deficient number, since it is larger than the sum of its proper divisors (43031804827).

515023015013 is a wasteful number, since it uses less digits than its factorization.

515023015013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366188.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 515023015013 its reverse (310510320515), we get a palindrome (825533335528).

The spelling of 515023015013 in words is "five hundred fifteen billion, twenty-three million, fifteen thousand, thirteen".