78385258387 has 8 divisors (see below), whose sum is σ = 78554300400. Its totient is φ = 78216276384.

The previous prime is 78385258379. The next prime is 78385258403.

78385258387 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 78385258387 - 2³ = 78385258379 is a prime.

It is a super-2 number, since 2×78385258387² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78385258327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3439153 + ... + 3461869.

It is an arithmetic number, because the mean of its divisors is an integer number (9819287550).

Almost surely, 2^78385258387 is an apocalyptic number.

78385258387 is a deficient number, since it is larger than the sum of its proper divisors (169042013).

78385258387 is a wasteful number, since it uses less digits than its factorization.

78385258387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30005.

The product of its digits is 90316800, while the sum is 64.

The spelling of 78385258387 in words is "seventy-eight billion, three hundred eighty-five million, two hundred fifty-eight thousand, three hundred eighty-seven".