772761152066 has 4 divisors (see below), whose sum is σ = 1159141728102. Its totient is φ = 386380576032.

The previous prime is 772761152063. The next prime is 772761152089. The reversal of 772761152066 is 660251167277.

772761152066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 588265990225 + 184495161841 = 766985^2 + 429529^2 .

It is not an unprimeable number, because it can be changed into a prime (772761152063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193190288015 + ... + 193190288018.

Almost surely, 2^772761152066 is an apocalyptic number.

772761152066 is a deficient number, since it is larger than the sum of its proper divisors (386380576036).

772761152066 is a wasteful number, since it uses less digits than its factorization.

772761152066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386380576035.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 772761152066 in words is "seven hundred seventy-two billion, seven hundred sixty-one million, one hundred fifty-two thousand, sixty-six".