9777315664948 has 12 divisors (see below), whose sum is σ = 18426479522500. Its totient is φ = 4512607229952.

The previous prime is 9777315664943. The next prime is 9777315664997. The reversal of 9777315664948 is 8494665137779.

It can be written as a sum of positive squares in 2 ways, for example, as 2412268709904 + 7365046955044 = 1553148^2 + 2713862^2 .

It is a super-2 number, since 2×9777315664948² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9777315664943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94012650573 + ... + 94012650676.

Almost surely, 2^{9777315664948} is an apocalyptic number.

It is an amenable number.

9777315664948 is a deficient number, since it is larger than the sum of its proper divisors (8649163857552).

9777315664948 is a wasteful number, since it uses less digits than its factorization.

9777315664948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188025301266 (or 188025301264 counting only the distinct ones).

The product of its digits is 1920360960, while the sum is 76.

The spelling of 9777315664948 in words is "nine trillion, seven hundred seventy-seven billion, three hundred fifteen million, six hundred sixty-four thousand, nine hundred forty-eight".