77727633163636 has 48 divisors (see below), whose sum is σ = 153681761842560. Its totient is φ = 34177874365440.

The previous prime is 77727633163633. The next prime is 77727633163639. The reversal of 77727633163636 is 63636133672777.

It is an interprime number because it is at equal distance from previous prime (77727633163633) and next prime (77727633163639).

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77727633163633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411965320 + ... + 412153951.

It is an arithmetic number, because the mean of its divisors is an integer number (3201703371720).

Almost surely, 2^{77727633163636} is an apocalyptic number.

77727633163636 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

77727633163636 is a deficient number, since it is larger than the sum of its proper divisors (75954128678924).

77727633163636 is a wasteful number, since it uses less digits than its factorization.

77727633163636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824119384 (or 824119382 counting only the distinct ones).

The product of its digits is 504094752, while the sum is 67.

The spelling of 77727633163636 in words is "seventy-seven trillion, seven hundred twenty-seven billion, six hundred thirty-three million, one hundred sixty-three thousand, six hundred thirty-six".