515151205087 has 2 divisors, whose sum is σ = 515151205088. Its totient is φ = 515151205086.

The previous prime is 515151205013. The next prime is 515151205157. The reversal of 515151205087 is 780502151515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515151205087 - 2¹⁹ = 515150680799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515151205187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257575602543 + 257575602544.

It is an arithmetic number, because the mean of its divisors is an integer number (257575602544).

Almost surely, 2^515151205087 is an apocalyptic number.

515151205087 is a deficient number, since it is larger than the sum of its proper divisors (1).

515151205087 is an equidigital number, since it uses as much as digits as its factorization.

515151205087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70000, while the sum is 40.

The spelling of 515151205087 in words is "five hundred fifteen billion, one hundred fifty-one million, two hundred five thousand, eighty-seven".