5078125672618 has 4 divisors (see below), whose sum is σ = 7617188508930. Its totient is φ = 2539062836308.

The previous prime is 5078125672591. The next prime is 5078125672673. The reversal of 5078125672618 is 8162765218705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4965245128089 + 112880544529 = 2228283^2 + 335977^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269531418153 + ... + 1269531418156.

Almost surely, 2^{5078125672618} is an apocalyptic number.

5078125672618 is a deficient number, since it is larger than the sum of its proper divisors (2539062836312).

5078125672618 is a wasteful number, since it uses less digits than its factorization.

5078125672618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539062836311.

The product of its (nonzero) digits is 11289600, while the sum is 58.

The spelling of 5078125672618 in words is "five trillion, seventy-eight billion, one hundred twenty-five million, six hundred seventy-two thousand, six hundred eighteen".