51763802779 has 12 divisors (see below), whose sum is σ = 56077662096. Its totient is φ = 47760035232.

The previous prime is 51763802777. The next prime is 51763802807. The reversal of 51763802779 is 97720836715.

It is a happy number.

It is not a de Polignac number, because 51763802779 - 2¹ = 51763802777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51763802777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304794 + ... + 443200.

It is an arithmetic number, because the mean of its divisors is an integer number (4673138508).

Almost surely, 2^51763802779 is an apocalyptic number.

51763802779 is a deficient number, since it is larger than the sum of its proper divisors (4313859317).

51763802779 is a wasteful number, since it uses less digits than its factorization.

51763802779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140646 (or 140633 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 51763802779 in words is "fifty-one billion, seven hundred sixty-three million, eight hundred two thousand, seven hundred seventy-nine".