789898813778 has 48 divisors (see below), whose sum is σ = 1258927173504. Its totient is φ = 371002262400.

The previous prime is 789898813729. The next prime is 789898813783. The reversal of 789898813778 is 877318898987.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 789898813696 and 789898813705.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69582803 + ... + 69594153.

It is an arithmetic number, because the mean of its divisors is an integer number (26227649448).

Almost surely, 2^789898813778 is an apocalyptic number.

789898813778 is a deficient number, since it is larger than the sum of its proper divisors (469028359726).

789898813778 is a wasteful number, since it uses less digits than its factorization.

789898813778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11847 (or 11780 counting only the distinct ones).

The product of its digits is 2731180032, while the sum is 83.

The spelling of 789898813778 in words is "seven hundred eighty-nine billion, eight hundred ninety-eight million, eight hundred thirteen thousand, seven hundred seventy-eight".