77213452547200 has 96 divisors (see below), whose sum is σ = 191483543303460. Its totient is φ = 30765204111360.

The previous prime is 77213452547197. The next prime is 77213452547261. The reversal of 77213452547200 is 274525431277.

It can be written as a sum of positive squares in 6 ways, for example, as 57540963251776 + 19672489295424 = 7585576^2 + 4435368^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46121577 + ... + 47766376.

Almost surely, 2^{77213452547200} is an apocalyptic number.

It is an amenable number.

77213452547200 is an abundant number, since it is smaller than the sum of its proper divisors (114270090756260).

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

77213452547200 is a wasteful number, since it uses less digits than its factorization.

77213452547200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93888234 (or 93888217 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 49.

Adding to 77213452547200 its reverse (274525431277), we get a palindrome (77487977978477).

The spelling of 77213452547200 in words is "seventy-seven trillion, two hundred thirteen billion, four hundred fifty-two million, five hundred forty-seven thousand, two hundred".