61134396709 has 2 divisors, whose sum is σ = 61134396710. Its totient is φ = 61134396708.

The previous prime is 61134396707. The next prime is 61134396731. The reversal of 61134396709 is 90769343116.

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., 45528890625 + 15605506084 = 213375^2 + 124922^2 .

It is a cyclic number.

It is not a de Polignac number, because 61134396709 - 2¹ = 61134396707 is a prime.

Together with 61134396707, 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 (61134396707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30567198354 + 30567198355.

It is an arithmetic number, because the mean of its divisors is an integer number (30567198355).

Almost surely, 2^61134396709 is an apocalyptic number.

It is an amenable number.

61134396709 is a deficient number, since it is larger than the sum of its proper divisors (1).

61134396709 is an equidigital number, since it uses as much as digits as its factorization.

61134396709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 61134396709 in words is "sixty-one billion, one hundred thirty-four million, three hundred ninety-six thousand, seven hundred nine".