78104625103018 has 4 divisors (see below), whose sum is σ = 117156937654530. Its totient is φ = 39052312551508.

The previous prime is 78104625103013. The next prime is 78104625103051. The reversal of 78104625103018 is 81030152640187.

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., 72461515579489 + 5643109523529 = 8512433^2 + 2375523^2 .

It is a super-2 number, since 2×78104625103018² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78104625103013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19526156275753 + ... + 19526156275756.

Almost surely, 2^{78104625103018} is an apocalyptic number.

78104625103018 is a deficient number, since it is larger than the sum of its proper divisors (39052312551512).

78104625103018 is a wasteful number, since it uses less digits than its factorization.

78104625103018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39052312551511.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 78104625103018 in words is "seventy-eight trillion, one hundred four billion, six hundred twenty-five million, one hundred three thousand, eighteen".