7678618971004 has 6 divisors (see below), whose sum is σ = 13437583199264. Its totient is φ = 3839309485500.

The previous prime is 7678618970989. The next prime is 7678618971007. The reversal of 7678618971004 is 4001798168767.

It is a happy number.

It is a super-2 number, since 2×7678618971004² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7678618971007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959827371372 + ... + 959827371379.

Almost surely, 2^{7678618971004} is an apocalyptic number.

It is an amenable number.

7678618971004 is a deficient number, since it is larger than the sum of its proper divisors (5758964228260).

7678618971004 is a wasteful number, since it uses less digits than its factorization.

7678618971004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919654742755 (or 1919654742753 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 64.

The spelling of 7678618971004 in words is "seven trillion, six hundred seventy-eight billion, six hundred eighteen million, nine hundred seventy-one thousand, four".