61371927473 has 2 divisors, whose sum is σ = 61371927474. Its totient is φ = 61371927472.

The previous prime is 61371927413. The next prime is 61371927481. The reversal of 61371927473 is 37472917316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61190432689 + 181494784 = 247367^2 + 13472^2 .

It is a cyclic number.

It is not a de Polignac number, because 61371927473 - 2⁸ = 61371927217 is a prime.

It is not a weakly prime, because it can be changed into another prime (61371927413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30685963736 + 30685963737.

It is an arithmetic number, because the mean of its divisors is an integer number (30685963737).

Almost surely, 2^61371927473 is an apocalyptic number.

It is an amenable number.

61371927473 is a deficient number, since it is larger than the sum of its proper divisors (1).

61371927473 is an equidigital number, since it uses as much as digits as its factorization.

61371927473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The spelling of 61371927473 in words is "sixty-one billion, three hundred seventy-one million, nine hundred twenty-seven thousand, four hundred seventy-three".