77325650866 has 32 divisors (see below), whose sum is σ = 127447493040. Its totient is φ = 35022790656.

The previous prime is 77325650863. The next prime is 77325650867. The reversal of 77325650866 is 66805652377.

It can be written as a sum of positive squares in 8 ways, for example, as 48754848025 + 28570802841 = 220805^2 + 169029^2 .

It is a super-3 number, since 3×77325650866³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (77325650863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188866 + ... + 436258.

Almost surely, 2^77325650866 is an apocalyptic number.

77325650866 is a deficient number, since it is larger than the sum of its proper divisors (50121842174).

77325650866 is a wasteful number, since it uses less digits than its factorization.

77325650866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247758.

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 77325650866 in words is "seventy-seven billion, three hundred twenty-five million, six hundred fifty thousand, eight hundred sixty-six".