51466046461 has 2 divisors, whose sum is σ = 51466046462. Its totient is φ = 51466046460.

The previous prime is 51466046413. The next prime is 51466046479. The reversal of 51466046461 is 16464066415.

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., 49916049561 + 1549996900 = 223419^2 + 39370^2 .

It is a cyclic number.

It is not a de Polignac number, because 51466046461 - 2⁹ = 51466045949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51466046161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25733023230 + 25733023231.

It is an arithmetic number, because the mean of its divisors is an integer number (25733023231).

Almost surely, 2^51466046461 is an apocalyptic number.

It is an amenable number.

51466046461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51466046461 is an equidigital number, since it uses as much as digits as its factorization.

51466046461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 51466046461 in words is "fifty-one billion, four hundred sixty-six million, forty-six thousand, four hundred sixty-one".