772613065555 has 4 divisors (see below), whose sum is σ = 927135678672. Its totient is φ = 618090452440.

The previous prime is 772613065541. The next prime is 772613065559. The reversal of 772613065555 is 555560316277.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 772613065555 - 2¹¹ = 772613063507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772613065559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77261306551 + ... + 77261306560.

It is an arithmetic number, because the mean of its divisors is an integer number (231783919668).

Almost surely, 2^772613065555 is an apocalyptic number.

772613065555 is a deficient number, since it is larger than the sum of its proper divisors (154522613117).

772613065555 is a wasteful number, since it uses less digits than its factorization.

772613065555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154522613116.

The product of its (nonzero) digits is 6615000, while the sum is 52.

The spelling of 772613065555 in words is "seven hundred seventy-two billion, six hundred thirteen million, sixty-five thousand, five hundred fifty-five".