78506883467578 has 8 divisors (see below), whose sum is σ = 117760426904340. Its totient is φ = 39253407832800.

The previous prime is 78506883467563. The next prime is 78506883467587. The reversal of 78506883467578 is 87576438860587.

It can be written as a sum of positive squares in 2 ways, for example, as 77270657479129 + 1236225988449 = 8790373^2 + 1111857^2 .

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

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, 13949523 + ... + 18751078.

Almost surely, 2^{78506883467578} is an apocalyptic number.

78506883467578 is a deficient number, since it is larger than the sum of its proper divisors (39253543436762).

78506883467578 is a wasteful number, since it uses less digits than its factorization.

78506883467578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33900992.

The product of its (nonzero) digits is 15173222400, while the sum is 82.

The spelling of 78506883467578 in words is "seventy-eight trillion, five hundred six billion, eight hundred eighty-three million, four hundred sixty-seven thousand, five hundred seventy-eight".