51402354329 has 2 divisors, whose sum is σ = 51402354330. Its totient is φ = 51402354328.

The previous prime is 51402354281. The next prime is 51402354347. The reversal of 51402354329 is 92345320415.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36539087104 + 14863267225 = 191152^2 + 121915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51402354329 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51402354292 and 51402354301.

It is not a weakly prime, because it can be changed into another prime (51402359329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25701177164 + 25701177165.

It is an arithmetic number, because the mean of its divisors is an integer number (25701177165).

Almost surely, 2^51402354329 is an apocalyptic number.

It is an amenable number.

51402354329 is a deficient number, since it is larger than the sum of its proper divisors (1).

51402354329 is an equidigital number, since it uses as much as digits as its factorization.

51402354329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 51402354329 in words is "fifty-one billion, four hundred two million, three hundred fifty-four thousand, three hundred twenty-nine".