78448755784487 has 8 divisors (see below), whose sum is σ = 85723333084800. Its totient is φ = 71197990522360.

The previous prime is 78448755784463. The next prime is 78448755784523.

It is a happy number.

78448755784487 is nontrivially palindromic in base 10.

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 78448755784487 - 2¹² = 78448755780391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78448755784399 and 78448755784408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78448755784187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5953002653 + ... + 5953015830.

It is an arithmetic number, because the mean of its divisors is an integer number (10715416635600).

Almost surely, 2^{78448755784487} is an apocalyptic number.

78448755784487 is a deficient number, since it is larger than the sum of its proper divisors (7274577300313).

78448755784487 is a wasteful number, since it uses less digits than its factorization.

78448755784487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11906019093.

The product of its digits is 62940774400, while the sum is 86.

The spelling of 78448755784487 in words is "seventy-eight trillion, four hundred forty-eight billion, seven hundred fifty-five million, seven hundred eighty-four thousand, four hundred eighty-seven".