76665856996 has 27 divisors (see below), whose sum is σ = 135136456329. Its totient is φ = 38057426928.

The previous prime is 76665856937. The next prime is 76665856999. The reversal of 76665856996 is 69965856667.

The square root of 76665856996 is 276886.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 44136127396 + 32529729600 = 210086^2 + 180360^2 .

It is a super-2 number, since 2×76665856996² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76665856999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 92479510 + ... + 92480338.

Almost surely, 2^76665856996 is an apocalyptic number.

76665856996 is the 276886-th square number.

It is an amenable number.

76665856996 is a deficient number, since it is larger than the sum of its proper divisors (58470599333).

76665856996 is an frugal number, since it uses more digits than its factorization.

76665856996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 998 counting only the distinct ones).

The product of its digits is 881798400, while the sum is 73.

It can be divided in two parts, 76665 and 856996, that added together give a triangular number (933661 = T₁₃₆₆).

The spelling of 76665856996 in words is "seventy-six billion, six hundred sixty-five million, eight hundred fifty-six thousand, nine hundred ninety-six".