76661433416668 has 48 divisors (see below), whose sum is σ = 135961162303680. Its totient is φ = 37817353728000.

The previous prime is 76661433416657. The next prime is 76661433416693. The reversal of 76661433416668 is 86661433416667.

It is a super-2 number, since 2×76661433416668² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 317553448 + ... + 317794768.

It is an arithmetic number, because the mean of its divisors is an integer number (2832524214660).

Almost surely, 2^{76661433416668} is an apocalyptic number.

It is an amenable number.

76661433416668 is a deficient number, since it is larger than the sum of its proper divisors (59299728887012).

76661433416668 is a wasteful number, since it uses less digits than its factorization.

76661433416668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243358 (or 243356 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 67.

Subtracting 76661433416668 from its reverse (86661433416667), we obtain a palindrome (9999999999999).

The spelling of 76661433416668 in words is "seventy-six trillion, six hundred sixty-one billion, four hundred thirty-three million, four hundred sixteen thousand, six hundred sixty-eight".