78231516362575 has 12 divisors (see below), whose sum is σ = 97154283770280. Its totient is φ = 62490243102560.

The previous prime is 78231516362431. The next prime is 78231516362633. The reversal of 78231516362575 is 57526361513287.

It is not a de Polignac number, because 78231516362575 - 2¹¹ = 78231516360527 is a prime.

It is a super-2 number, since 2×78231516362575² (a number of 29 digits) contains 22 as substring.

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, 2374232884 + ... + 2374265833.

It is an arithmetic number, because the mean of its divisors is an integer number (8096190314190).

Almost surely, 2^{78231516362575} is an apocalyptic number.

78231516362575 is a deficient number, since it is larger than the sum of its proper divisors (18922767407705).

78231516362575 is a wasteful number, since it uses less digits than its factorization.

78231516362575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748499386 (or 4748499381 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 61.

The spelling of 78231516362575 in words is "seventy-eight trillion, two hundred thirty-one billion, five hundred sixteen million, three hundred sixty-two thousand, five hundred seventy-five".