78585113108551 has 8 divisors (see below), whose sum is σ = 89811894310560. Its totient is φ = 67358416024608.

The previous prime is 78585113108399. The next prime is 78585113108561. The reversal of 78585113108551 is 15580131158587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78585113108551 - 2¹¹ = 78585113106503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78585113108561) 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 7 ways as a sum of consecutive naturals, for example, 19014736 + ... + 22775653.

It is an arithmetic number, because the mean of its divisors is an integer number (11226486788820).

Almost surely, 2^{78585113108551} is an apocalyptic number.

78585113108551 is a deficient number, since it is larger than the sum of its proper divisors (11226781202009).

78585113108551 is a wasteful number, since it uses less digits than its factorization.

78585113108551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42059033.

The product of its (nonzero) digits is 6720000, while the sum is 58.

The spelling of 78585113108551 in words is "seventy-eight trillion, five hundred eighty-five billion, one hundred thirteen million, one hundred eight thousand, five hundred fifty-one".