78798262766 has 4 divisors (see below), whose sum is σ = 118197394152. Its totient is φ = 39399131382.

The previous prime is 78798262757. The next prime is 78798262799. The reversal of 78798262766 is 66726289787.

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

It is a junction number, because it is equal to n+sod(n) for n = 78798262696 and 78798262705.

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 as a sum of consecutive naturals, namely, 19699565690 + ... + 19699565693.

It is an arithmetic number, because the mean of its divisors is an integer number (29549348538).

Almost surely, 2^78798262766 is an apocalyptic number.

78798262766 is a deficient number, since it is larger than the sum of its proper divisors (39399131386).

78798262766 is a wasteful number, since it uses less digits than its factorization.

78798262766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39399131385.

The product of its digits is 170698752, while the sum is 68.

The spelling of 78798262766 in words is "seventy-eight billion, seven hundred ninety-eight million, two hundred sixty-two thousand, seven hundred sixty-six".