3520118744257 has 2 divisors, whose sum is σ = 3520118744258. Its totient is φ = 3520118744256.

The previous prime is 3520118744213. The next prime is 3520118744281. The reversal of 3520118744257 is 7524478110253.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2016922593856 + 1503196150401 = 1420184^2 + 1226049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3520118744257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3520118744257.

It is not a weakly prime, because it can be changed into another prime (3520118744557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760059372128 + 1760059372129.

It is an arithmetic number, because the mean of its divisors is an integer number (1760059372129).

Almost surely, 2^{3520118744257} is an apocalyptic number.

It is an amenable number.

3520118744257 is a deficient number, since it is larger than the sum of its proper divisors (1).

3520118744257 is an equidigital number, since it uses as much as digits as its factorization.

3520118744257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 3520118744257 in words is "three trillion, five hundred twenty billion, one hundred eighteen million, seven hundred forty-four thousand, two hundred fifty-seven".