77078000398 has 8 divisors (see below), whose sum is σ = 132133714992. Its totient is φ = 33033428736.

The previous prime is 77078000341. The next prime is 77078000431. The reversal of 77078000398 is 89300087077.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2752785715 + ... + 2752785742.

It is an arithmetic number, because the mean of its divisors is an integer number (16516714374).

Almost surely, 2^77078000398 is an apocalyptic number.

77078000398 is a deficient number, since it is larger than the sum of its proper divisors (55055714594).

77078000398 is a wasteful number, since it uses less digits than its factorization.

77078000398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505571466.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 77078000398 in words is "seventy-seven billion, seventy-eight million, three hundred ninety-eight", and thus it is an aban number.