10878015517 has 2 divisors, whose sum is σ = 10878015518. Its totient is φ = 10878015516.

The previous prime is 10878015509. The next prime is 10878015557. The reversal of 10878015517 is 71551087801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6281989081 + 4596026436 = 79259^2 + 67794^2 .

It is a cyclic number.

It is not a de Polignac number, because 10878015517 - 2³ = 10878015509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10878015557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5439007758 + 5439007759.

It is an arithmetic number, because the mean of its divisors is an integer number (5439007759).

Almost surely, 2^10878015517 is an apocalyptic number.

It is an amenable number.

10878015517 is a deficient number, since it is larger than the sum of its proper divisors (1).

10878015517 is an equidigital number, since it uses as much as digits as its factorization.

10878015517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78400, while the sum is 43.

The spelling of 10878015517 in words is "ten billion, eight hundred seventy-eight million, fifteen thousand, five hundred seventeen".