78548453628115 has 4 divisors (see below), whose sum is σ = 94258144353744. Its totient is φ = 62838762902488.

The previous prime is 78548453628107. The next prime is 78548453628167. The reversal of 78548453628115 is 51182635484587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78548453628115 - 2³ = 78548453628107 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7854845362807 + ... + 7854845362816.

It is an arithmetic number, because the mean of its divisors is an integer number (23564536088436).

Almost surely, 2^{78548453628115} is an apocalyptic number.

78548453628115 is a deficient number, since it is larger than the sum of its proper divisors (15709690725629).

78548453628115 is a wasteful number, since it uses less digits than its factorization.

78548453628115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15709690725628.

The product of its digits is 258048000, while the sum is 67.

The spelling of 78548453628115 in words is "seventy-eight trillion, five hundred forty-eight billion, four hundred fifty-three million, six hundred twenty-eight thousand, one hundred fifteen".