87878705265 has 48 divisors (see below), whose sum is σ = 164088724800. Its totient is φ = 43250578560.

The previous prime is 87878705263. The next prime is 87878705267. The reversal of 87878705265 is 56250787878.

It is an interprime number because it is at equal distance from previous prime (87878705263) and next prime (87878705267).

It is not a de Polignac number, because 87878705265 - 2¹ = 87878705263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87878705261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2138886 + ... + 2179584.

It is an arithmetic number, because the mean of its divisors is an integer number (3418515100).

Almost surely, 2^87878705265 is an apocalyptic number.

It is an amenable number.

87878705265 is a deficient number, since it is larger than the sum of its proper divisors (76210019535).

87878705265 is a wasteful number, since it uses less digits than its factorization.

87878705265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44414 (or 44411 counting only the distinct ones).

The product of its (nonzero) digits is 52684800, while the sum is 63.

The spelling of 87878705265 in words is "eighty-seven billion, eight hundred seventy-eight million, seven hundred five thousand, two hundred sixty-five".