78672214549 has 8 divisors (see below), whose sum is σ = 83320915040. Its totient is φ = 74074319856.

The previous prime is 78672214547. The next prime is 78672214567. The reversal of 78672214549 is 94541227687.

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 78672214549 - 2¹ = 78672214547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78672214549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78672214547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12698262 + ... + 12704455.

It is an arithmetic number, because the mean of its divisors is an integer number (10415114380).

Almost surely, 2^78672214549 is an apocalyptic number.

It is an amenable number.

78672214549 is a deficient number, since it is larger than the sum of its proper divisors (4648700491).

78672214549 is a wasteful number, since it uses less digits than its factorization.

78672214549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25402899.

The product of its digits is 6773760, while the sum is 55.

The spelling of 78672214549 in words is "seventy-eight billion, six hundred seventy-two million, two hundred fourteen thousand, five hundred forty-nine".