51776049664 has 40 divisors (see below), whose sum is σ = 103508875008. Its totient is φ = 25873536000.

The previous prime is 51776049653. The next prime is 51776049733. The reversal of 51776049664 is 46694067715.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918289 + ... + 973039.

Almost surely, 2^51776049664 is an apocalyptic number.

It is an amenable number.

51776049664 is a deficient number, since it is larger than the sum of its proper divisors (51732825344).

51776049664 is an equidigital number, since it uses as much as digits as its factorization.

51776049664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56616 (or 56600 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 51776049664 in words is "fifty-one billion, seven hundred seventy-six million, forty-nine thousand, six hundred sixty-four".