78507240775426 has 8 divisors (see below), whose sum is σ = 117765105951744. Its totient is φ = 39252205458180.

The previous prime is 78507240775367. The next prime is 78507240775459. The reversal of 78507240775426 is 62457704270587.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707395410 + ... + 707506381.

It is an arithmetic number, because the mean of its divisors is an integer number (14720638243968).

Almost surely, 2^{78507240775426} is an apocalyptic number.

78507240775426 is a deficient number, since it is larger than the sum of its proper divisors (39257865176318).

78507240775426 is a wasteful number, since it uses less digits than its factorization.

78507240775426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414929536.

The product of its (nonzero) digits is 184396800, while the sum is 64.

The spelling of 78507240775426 in words is "seventy-eight trillion, five hundred seven billion, two hundred forty million, seven hundred seventy-five thousand, four hundred twenty-six".