78989144575 has 12 divisors (see below), whose sum is σ = 106850770488. Its totient is φ = 57446650400.

The previous prime is 78989144527. The next prime is 78989144629. The reversal of 78989144575 is 57544198987.

It is not a de Polignac number, because 78989144575 - 2¹¹ = 78989142527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78989144575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143616352 + ... + 143616901.

It is an arithmetic number, because the mean of its divisors is an integer number (8904230874).

Almost surely, 2^78989144575 is an apocalyptic number.

78989144575 is a deficient number, since it is larger than the sum of its proper divisors (27861625913).

78989144575 is a wasteful number, since it uses less digits than its factorization.

78989144575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287233274 (or 287233269 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 67.

The spelling of 78989144575 in words is "seventy-eight billion, nine hundred eighty-nine million, one hundred forty-four thousand, five hundred seventy-five".