77266357268 has 6 divisors (see below), whose sum is σ = 135216125226. Its totient is φ = 38633178632.

The previous prime is 77266357253. The next prime is 77266357279. The reversal of 77266357268 is 86275366277.

It can be written as a sum of positive squares in only one way, i.e., 66549552784 + 10716804484 = 257972^2 + 103522^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9658294655 + ... + 9658294662.

It is an arithmetic number, because the mean of its divisors is an integer number (22536020871).

Almost surely, 2^77266357268 is an apocalyptic number.

It is an amenable number.

77266357268 is a deficient number, since it is larger than the sum of its proper divisors (57949767958).

77266357268 is a wasteful number, since it uses less digits than its factorization.

77266357268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19316589321 (or 19316589319 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 59.

Subtracting 77266357268 from its reverse (86275366277), we obtain a palindrome (9009009009).

The spelling of 77266357268 in words is "seventy-seven billion, two hundred sixty-six million, three hundred fifty-seven thousand, two hundred sixty-eight".