77623394851396 has 81 divisors (see below), whose sum is σ = 144836522006463. Its totient is φ = 36395820234000.

The previous prime is 77623394851369. The next prime is 77623394851399. The reversal of 77623394851396 is 69315849332677.

It is a happy number.

The square root of 77623394851396 is 8810414.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77623394851399) 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 in 26 ways as a sum of consecutive naturals, for example, 34483959271 + ... + 34483961521.

Almost surely, 2^{77623394851396} is an apocalyptic number.

77623394851396 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

77623394851396 is the 8810414-th square number.

It is an amenable number.

77623394851396 is a deficient number, since it is larger than the sum of its proper divisors (67213127155067).

77623394851396 is an equidigital number, since it uses as much as digits as its factorization.

77623394851396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4750 (or 2375 counting only the distinct ones).

The product of its digits is 1234517760, while the sum is 73.

The spelling of 77623394851396 in words is "seventy-seven trillion, six hundred twenty-three billion, three hundred ninety-four million, eight hundred fifty-one thousand, three hundred ninety-six".