515055345121 has 16 divisors (see below), whose sum is σ = 557252915200. Its totient is φ = 474387383808.

The previous prime is 515055345107. The next prime is 515055345139. The reversal of 515055345121 is 121543550515.

It is a cyclic number.

It is not a de Polignac number, because 515055345121 - 2¹⁷ = 515055214049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (515055346121) 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, 612721 + ... + 1185553.

It is an arithmetic number, because the mean of its divisors is an integer number (34828307200).

Almost surely, 2^515055345121 is an apocalyptic number.

It is an amenable number.

515055345121 is a deficient number, since it is larger than the sum of its proper divisors (42197570079).

515055345121 is a wasteful number, since it uses less digits than its factorization.

515055345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574168.

The product of its (nonzero) digits is 75000, while the sum is 37.

Adding to 515055345121 its reverse (121543550515), we get a palindrome (636598895636).

The spelling of 515055345121 in words is "five hundred fifteen billion, fifty-five million, three hundred forty-five thousand, one hundred twenty-one".