491360602345 has 4 divisors (see below), whose sum is σ = 589632722820. Its totient is φ = 393088481872.

The previous prime is 491360602321. The next prime is 491360602429. The reversal of 491360602345 is 543206063194.

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 324389480704 + 166971121641 = 569552^2 + 408621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491360602345 is a prime.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 49136060230 + ... + 49136060239.

It is an arithmetic number, because the mean of its divisors is an integer number (147408180705).

Almost surely, 2^491360602345 is an apocalyptic number.

It is an amenable number.

491360602345 is a deficient number, since it is larger than the sum of its proper divisors (98272120475).

491360602345 is an equidigital number, since it uses as much as digits as its factorization.

491360602345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98272120474.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 491360602345 in words is "four hundred ninety-one billion, three hundred sixty million, six hundred two thousand, three hundred forty-five".