51466156006361 has 2 divisors, whose sum is σ = 51466156006362. Its totient is φ = 51466156006360.

The previous prime is 51466156006327. The next prime is 51466156006399. The reversal of 51466156006361 is 16360065166415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42445954683136 + 9020201323225 = 6515056^2 + 3003365^2 .

It is a cyclic number.

It is not a de Polignac number, because 51466156006361 - 2²² = 51466151812057 is a prime.

It is not a weakly prime, because it can be changed into another prime (51466156006301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25733078003180 + 25733078003181.

It is an arithmetic number, because the mean of its divisors is an integer number (25733078003181).

Almost surely, 2^{51466156006361} is an apocalyptic number.

It is an amenable number.

51466156006361 is a deficient number, since it is larger than the sum of its proper divisors (1).

51466156006361 is an equidigital number, since it uses as much as digits as its factorization.

51466156006361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 51466156006361 in words is "fifty-one trillion, four hundred sixty-six billion, one hundred fifty-six million, six thousand, three hundred sixty-one".