3547851324449 has 2 divisors, whose sum is σ = 3547851324450. Its totient is φ = 3547851324448.

The previous prime is 3547851324397. The next prime is 3547851324517. The reversal of 3547851324449 is 9444231587453.

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., 3123236183824 + 424615140625 = 1767268^2 + 651625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3547851324449 is a prime.

It is not a weakly prime, because it can be changed into another prime (3547851324649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1773925662224 + 1773925662225.

It is an arithmetic number, because the mean of its divisors is an integer number (1773925662225).

Almost surely, 2^{3547851324449} is an apocalyptic number.

It is an amenable number.

3547851324449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3547851324449 is an equidigital number, since it uses as much as digits as its factorization.

3547851324449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58060800, while the sum is 59.

The spelling of 3547851324449 in words is "three trillion, five hundred forty-seven billion, eight hundred fifty-one million, three hundred twenty-four thousand, four hundred forty-nine".