1609117076977 has 2 divisors, whose sum is σ = 1609117076978. Its totient is φ = 1609117076976.

The previous prime is 1609117076971. The next prime is 1609117077017. The reversal of 1609117076977 is 7796707119061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061540756721 + 547576320256 = 1030311^2 + 739984^2 .

It is a cyclic number.

It is not a de Polignac number, because 1609117076977 - 2³ = 1609117076969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1609117076971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804558538488 + 804558538489.

It is an arithmetic number, because the mean of its divisors is an integer number (804558538489).

Almost surely, 2^{1609117076977} is an apocalyptic number.

It is an amenable number.

1609117076977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609117076977 is an equidigital number, since it uses as much as digits as its factorization.

1609117076977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7001316, while the sum is 61.

The spelling of 1609117076977 in words is "one trillion, six hundred nine billion, one hundred seventeen million, seventy-six thousand, nine hundred seventy-seven".