77732576252872 has 8 divisors (see below), whose sum is σ = 145748580474150. Its totient is φ = 38866288126432.

The previous prime is 77732576252857. The next prime is 77732576252911. The reversal of 77732576252872 is 27825267523777.

It can be written as a sum of positive squares in only one way, i.e., 61921884950116 + 15810691302756 = 7869046^2 + 3976266^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4858286015797 + ... + 4858286015812.

Almost surely, 2^{77732576252872} is an apocalyptic number.

It is an amenable number.

77732576252872 is a deficient number, since it is larger than the sum of its proper divisors (68016004221278).

77732576252872 is a wasteful number, since it uses less digits than its factorization.

77732576252872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9716572031615 (or 9716572031611 counting only the distinct ones).

The product of its digits is 968083200, while the sum is 70.

The spelling of 77732576252872 in words is "seventy-seven trillion, seven hundred thirty-two billion, five hundred seventy-six million, two hundred fifty-two thousand, eight hundred seventy-two".