77366019320872 has 32 divisors (see below), whose sum is σ = 145204491859200. Its totient is φ = 38644834233600.

The previous prime is 77366019320869. The next prime is 77366019320873. The reversal of 77366019320872 is 27802391066377.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77366019320872.

It is not an unprimeable number, because it can be changed into a prime (77366019320873) 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, 47965129 + ... + 49551847.

It is an arithmetic number, because the mean of its divisors is an integer number (4537640370600).

Almost surely, 2^{77366019320872} is an apocalyptic number.

It is an amenable number.

77366019320872 is a deficient number, since it is larger than the sum of its proper divisors (67838472538328).

77366019320872 is a wasteful number, since it uses less digits than its factorization.

77366019320872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592737 (or 1592733 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 77366019320872 in words is "seventy-seven trillion, three hundred sixty-six billion, nineteen million, three hundred twenty thousand, eight hundred seventy-two".