777144485968 has 10 divisors (see below), whose sum is σ = 1505717441594. Its totient is φ = 388572242976.

The previous prime is 777144485947. The next prime is 777144485969. The reversal of 777144485968 is 869584441777.

It can be written as a sum of positive squares in only one way, i.e., 610886054464 + 166258431504 = 781592^2 + 407748^2 .

It is a junction number, because it is equal to n+sod(n) for n = 777144485897 and 777144485906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (777144485969) by changing a digit.

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, 24285765171 + ... + 24285765202.

Almost surely, 2^777144485968 is an apocalyptic number.

It is an amenable number.

777144485968 is a deficient number, since it is larger than the sum of its proper divisors (728572955626).

777144485968 is a wasteful number, since it uses less digits than its factorization.

777144485968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48571530381 (or 48571530375 counting only the distinct ones).

The product of its digits is 379330560, while the sum is 70.

The spelling of 777144485968 in words is "seven hundred seventy-seven billion, one hundred forty-four million, four hundred eighty-five thousand, nine hundred sixty-eight".