51096720879389 has 2 divisors, whose sum is σ = 51096720879390. Its totient is φ = 51096720879388.

The previous prime is 51096720879317. The next prime is 51096720879401. The reversal of 51096720879389 is 98397802769015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43420745871364 + 7675975008025 = 6589442^2 + 2770555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51096720879389 is a prime.

It is a super-2 number, since 2×51096720879389² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51096720879889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25548360439694 + 25548360439695.

It is an arithmetic number, because the mean of its divisors is an integer number (25548360439695).

Almost surely, 2^{51096720879389} is an apocalyptic number.

It is an amenable number.

51096720879389 is a deficient number, since it is larger than the sum of its proper divisors (1).

51096720879389 is an equidigital number, since it uses as much as digits as its factorization.

51096720879389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 411505920, while the sum is 74.

The spelling of 51096720879389 in words is "fifty-one trillion, ninety-six billion, seven hundred twenty million, eight hundred seventy-nine thousand, three hundred eighty-nine".