766462720728 has 16 divisors (see below), whose sum is σ = 1916156801880. Its totient is φ = 255487573568.

The previous prime is 766462720721. The next prime is 766462720733. The reversal of 766462720728 is 827027264667.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766462720721) 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, 15967973325 + ... + 15967973372.

Almost surely, 2^766462720728 is an apocalyptic number.

It is an amenable number.

766462720728 is an abundant number, since it is smaller than the sum of its proper divisors (1149694081152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766462720728 is a wasteful number, since it uses less digits than its factorization.

766462720728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31935946706 (or 31935946702 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 57.

The spelling of 766462720728 in words is "seven hundred sixty-six billion, four hundred sixty-two million, seven hundred twenty thousand, seven hundred twenty-eight".