78585873015 has 16 divisors (see below), whose sum is σ = 135409504608. Its totient is φ = 38688429696.

The previous prime is 78585872947. The next prime is 78585873019. The reversal of 78585873015 is 51037858587.

It is not a de Polignac number, because 78585873015 - 2¹¹ = 78585870967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78585873019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201502044 + ... + 201502433.

It is an arithmetic number, because the mean of its divisors is an integer number (8463094038).

Almost surely, 2^78585873015 is an apocalyptic number.

78585873015 is a deficient number, since it is larger than the sum of its proper divisors (56823631593).

78585873015 is a wasteful number, since it uses less digits than its factorization.

78585873015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403004498.

The product of its (nonzero) digits is 9408000, while the sum is 57.

The spelling of 78585873015 in words is "seventy-eight billion, five hundred eighty-five million, eight hundred seventy-three thousand, fifteen".