77346663313320 has 192 divisors, whose sum is σ = 252561415392000. Its totient is φ = 20528627986944.

The previous prime is 77346663313273. The next prime is 77346663313411. The reversal of 77346663313320 is 2331336664377.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241141611 + ... + 241462149.

It is an arithmetic number, because the mean of its divisors is an integer number (1315424038500).

Almost surely, 2^{77346663313320} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77346663313320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126280707696000).

77346663313320 is an abundant number, since it is smaller than the sum of its proper divisors (175214752078680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77346663313320 is a wasteful number, since it uses less digits than its factorization.

77346663313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323712 (or 323705 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 54.

Adding to 77346663313320 its reverse (2331336664377), we get a palindrome (79677999977697).

The spelling of 77346663313320 in words is "seventy-seven trillion, three hundred forty-six billion, six hundred sixty-three million, three hundred thirteen thousand, three hundred twenty".