772571265649 has 16 divisors (see below), whose sum is σ = 809081602560. Its totient is φ = 736906697280.

The previous prime is 772571265643. The next prime is 772571265677. The reversal of 772571265649 is 946562175277.

It is a cyclic number.

It is not a de Polignac number, because 772571265649 - 2¹¹ = 772571263601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772571265643) 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 15 ways as a sum of consecutive naturals, for example, 2253972 + ... + 2574010.

It is an arithmetic number, because the mean of its divisors is an integer number (50567600160).

Almost surely, 2^772571265649 is an apocalyptic number.

It is an amenable number.

772571265649 is a deficient number, since it is larger than the sum of its proper divisors (36510336911).

772571265649 is a wasteful number, since it uses less digits than its factorization.

772571265649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321360.

The product of its digits is 44452800, while the sum is 61.

The spelling of 772571265649 in words is "seven hundred seventy-two billion, five hundred seventy-one million, two hundred sixty-five thousand, six hundred forty-nine".