78757854547 has 16 divisors (see below), whose sum is σ = 80100487872. Its totient is φ = 77422141440.

The previous prime is 78757854529. The next prime is 78757854577. The reversal of 78757854547 is 74545875787.

It is a cyclic number.

It is not a de Polignac number, because 78757854547 - 2¹⁹ = 78757330259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78757854577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68306323 + ... + 68307475.

It is an arithmetic number, because the mean of its divisors is an integer number (5006280492).

Almost surely, 2^78757854547 is an apocalyptic number.

78757854547 is a deficient number, since it is larger than the sum of its proper divisors (1342633325).

78757854547 is a wasteful number, since it uses less digits than its factorization.

78757854547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198.

The product of its digits is 307328000, while the sum is 67.

The spelling of 78757854547 in words is "seventy-eight billion, seven hundred fifty-seven million, eight hundred fifty-four thousand, five hundred forty-seven".