491966827076 has 6 divisors (see below), whose sum is σ = 860941947390. Its totient is φ = 245983413536.

The previous prime is 491966827069. The next prime is 491966827087. The reversal of 491966827076 is 670728669194.

It can be written as a sum of positive squares in only one way, i.e., 430566942976 + 61399884100 = 656176^2 + 247790^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61495853381 + ... + 61495853388.

It is an arithmetic number, because the mean of its divisors is an integer number (143490324565).

Almost surely, 2^491966827076 is an apocalyptic number.

It is an amenable number.

491966827076 is a deficient number, since it is larger than the sum of its proper divisors (368975120314).

491966827076 is a wasteful number, since it uses less digits than its factorization.

491966827076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122991706773 (or 122991706771 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 491966827076 in words is "four hundred ninety-one billion, nine hundred sixty-six million, eight hundred twenty-seven thousand, seventy-six".