2515916877289 has 2 divisors, whose sum is σ = 2515916877290. Its totient is φ = 2515916877288.

The previous prime is 2515916877211. The next prime is 2515916877319. The reversal of 2515916877289 is 9827786195152.

2515916877289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2499070914025 + 16845963264 = 1580845^2 + 129792^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515916877289 - 2⁹ = 2515916876777 is a prime.

It is not a weakly prime, because it can be changed into another prime (2515916877589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257958438644 + 1257958438645.

It is an arithmetic number, because the mean of its divisors is an integer number (1257958438645).

Almost surely, 2^{2515916877289} is an apocalyptic number.

It is an amenable number.

2515916877289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515916877289 is an equidigital number, since it uses as much as digits as its factorization.

2515916877289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 152409600, while the sum is 70.

The spelling of 2515916877289 in words is "two trillion, five hundred fifteen billion, nine hundred sixteen million, eight hundred seventy-seven thousand, two hundred eighty-nine".