77672067344 has 20 divisors (see below), whose sum is σ = 150936197724. Its totient is φ = 38720790528.

The previous prime is 77672067337. The next prime is 77672067359. The reversal of 77672067344 is 44376027677.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34007785744 + 43664281600 = 184412^2 + 208960^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7197137 + ... + 7207920.

Almost surely, 2^77672067344 is an apocalyptic number.

It is an amenable number.

77672067344 is a deficient number, since it is larger than the sum of its proper divisors (73264130380).

77672067344 is a wasteful number, since it uses less digits than its factorization.

77672067344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14405402 (or 14405396 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 53.

The spelling of 77672067344 in words is "seventy-seven billion, six hundred seventy-two million, sixty-seven thousand, three hundred forty-four".