51184760461 has 2 divisors, whose sum is σ = 51184760462. Its totient is φ = 51184760460.

The previous prime is 51184760447. The next prime is 51184760477. The reversal of 51184760461 is 16406748115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44055491236 + 7129269225 = 209894^2 + 84435^2 .

It is a cyclic number.

It is not a de Polignac number, because 51184760461 - 2¹⁷ = 51184629389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51184760261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25592380230 + 25592380231.

It is an arithmetic number, because the mean of its divisors is an integer number (25592380231).

Almost surely, 2^51184760461 is an apocalyptic number.

It is an amenable number.

51184760461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51184760461 is an equidigital number, since it uses as much as digits as its factorization.

51184760461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 51184760461 in words is "fifty-one billion, one hundred eighty-four million, seven hundred sixty thousand, four hundred sixty-one".