61765655532073 has 2 divisors, whose sum is σ = 61765655532074. Its totient is φ = 61765655532072.

The previous prime is 61765655532041. The next prime is 61765655532083. The reversal of 61765655532073 is 37023555656716.

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., 60399756105984 + 1365899426089 = 7771728^2 + 1168717^2 .

It is a cyclic number.

It is not a de Polignac number, because 61765655532073 - 2⁵ = 61765655532041 is a prime.

It is not a weakly prime, because it can be changed into another prime (61765655532083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30882827766036 + 30882827766037.

It is an arithmetic number, because the mean of its divisors is an integer number (30882827766037).

Almost surely, 2^{61765655532073} is an apocalyptic number.

It is an amenable number.

61765655532073 is a deficient number, since it is larger than the sum of its proper divisors (1).

61765655532073 is an equidigital number, since it uses as much as digits as its factorization.

61765655532073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070000, while the sum is 61.

The spelling of 61765655532073 in words is "sixty-one trillion, seven hundred sixty-five billion, six hundred fifty-five million, five hundred thirty-two thousand, seventy-three".