361677556909 has 4 divisors (see below), whose sum is σ = 361699652380. Its totient is φ = 361655461440.

The previous prime is 361677556847. The next prime is 361677556927. The reversal of 361677556909 is 909655776163.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3894134409 + 357783422500 = 62403^2 + 598150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361677556909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361677556949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11023164 + ... + 11055925.

It is an arithmetic number, because the mean of its divisors is an integer number (90424913095).

Almost surely, 2^361677556909 is an apocalyptic number.

It is an amenable number.

361677556909 is a deficient number, since it is larger than the sum of its proper divisors (22095471).

361677556909 is a wasteful number, since it uses less digits than its factorization.

361677556909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22095470.

The product of its (nonzero) digits is 64297800, while the sum is 64.

The spelling of 361677556909 in words is "three hundred sixty-one billion, six hundred seventy-seven million, five hundred fifty-six thousand, nine hundred nine".