55707077609 has 2 divisors, whose sum is σ = 55707077610. Its totient is φ = 55707077608.

The previous prime is 55707077603. The next prime is 55707077611. The reversal of 55707077609 is 90677070755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36308159209 + 19398918400 = 190547^2 + 139280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55707077609 is a prime.

Together with 55707077611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55707077603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27853538804 + 27853538805.

It is an arithmetic number, because the mean of its divisors is an integer number (27853538805).

Almost surely, 2^55707077609 is an apocalyptic number.

It is an amenable number.

55707077609 is a deficient number, since it is larger than the sum of its proper divisors (1).

55707077609 is an equidigital number, since it uses as much as digits as its factorization.

55707077609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3241350, while the sum is 53.

The spelling of 55707077609 in words is "fifty-five billion, seven hundred seven million, seventy-seven thousand, six hundred nine".