51548069764 has 27 divisors (see below), whose sum is σ = 91761511023. Its totient is φ = 25337887200.

The previous prime is 51548069761. The next prime is 51548069789. The reversal of 51548069764 is 46796084515.

The square root of 51548069764 is 227042.

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

It can be written as a sum of positive squares in 4 ways, for example, as 49220972164 + 2327097600 = 221858^2 + 48240^2 .

It is a super-2 number, since 2×51548069764² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51548069761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27698194 + ... + 27700054.

Almost surely, 2^51548069764 is an apocalyptic number.

51548069764 is the 227042-nd square number.

It is an amenable number.

51548069764 is a deficient number, since it is larger than the sum of its proper divisors (40213441259).

51548069764 is an frugal number, since it uses more digits than its factorization.

51548069764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 51548069764 in words is "fifty-one billion, five hundred forty-eight million, sixty-nine thousand, seven hundred sixty-four".