77103147764 has 24 divisors (see below), whose sum is σ = 137189943240. Its totient is φ = 37911085056.

The previous prime is 77103147761. The next prime is 77103147773. The reversal of 77103147764 is 46774130177.

It can be written as a sum of positive squares in 4 ways, for example, as 7243371664 + 69859776100 = 85108^2 + 264310^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77103147761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571949 + ... + 693780.

It is an arithmetic number, because the mean of its divisors is an integer number (5716247635).

Almost surely, 2^77103147764 is an apocalyptic number.

It is an amenable number.

77103147764 is a deficient number, since it is larger than the sum of its proper divisors (60086795476).

77103147764 is a wasteful number, since it uses less digits than its factorization.

77103147764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265987 (or 1265985 counting only the distinct ones).

The product of its (nonzero) digits is 691488, while the sum is 47.

The spelling of 77103147764 in words is "seventy-seven billion, one hundred three million, one hundred forty-seven thousand, seven hundred sixty-four".