78625477065 has 16 divisors (see below), whose sum is σ = 125828203968. Its totient is φ = 41924440896.

The previous prime is 78625477043. The next prime is 78625477093. The reversal of 78625477065 is 56077452687.

It is not a de Polignac number, because 78625477065 - 2²⁰ = 78624428489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78625476996 and 78625477014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500334 + ... + 638423.

It is an arithmetic number, because the mean of its divisors is an integer number (7864262748).

Almost surely, 2^78625477065 is an apocalyptic number.

It is an amenable number.

78625477065 is a deficient number, since it is larger than the sum of its proper divisors (47202726903).

78625477065 is a wasteful number, since it uses less digits than its factorization.

78625477065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143368.

The product of its (nonzero) digits is 19756800, while the sum is 57.

The spelling of 78625477065 in words is "seventy-eight billion, six hundred twenty-five million, four hundred seventy-seven thousand, sixty-five".