61162712773 has 2 divisors, whose sum is σ = 61162712774. Its totient is φ = 61162712772.

The previous prime is 61162712771. The next prime is 61162712857. The reversal of 61162712773 is 37721726116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58884846244 + 2277866529 = 242662^2 + 47727^2 .

It is a cyclic number.

It is not a de Polignac number, because 61162712773 - 2¹ = 61162712771 is a prime.

Together with 61162712771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61162712771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30581356386 + 30581356387.

It is an arithmetic number, because the mean of its divisors is an integer number (30581356387).

Almost surely, 2^61162712773 is an apocalyptic number.

It is an amenable number.

61162712773 is a deficient number, since it is larger than the sum of its proper divisors (1).

61162712773 is an equidigital number, since it uses as much as digits as its factorization.

61162712773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 43.

The spelling of 61162712773 in words is "sixty-one billion, one hundred sixty-two million, seven hundred twelve thousand, seven hundred seventy-three".