3523640516749 has 4 divisors (see below), whose sum is σ = 3529966622364. Its totient is φ = 3517314411136.

The previous prime is 3523640516719. The next prime is 3523640516761. The reversal of 3523640516749 is 9476150463253.

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 2061277561225 + 1462362955524 = 1435715^2 + 1209282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3523640516749 is a prime.

It is a super-3 number, since 3×3523640516749³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3523640516749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3523640516719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3163051972 + ... + 3163053085.

It is an arithmetic number, because the mean of its divisors is an integer number (882491655591).

Almost surely, 2^{3523640516749} is an apocalyptic number.

It is an amenable number.

3523640516749 is a deficient number, since it is larger than the sum of its proper divisors (6326105615).

3523640516749 is an equidigital number, since it uses as much as digits as its factorization.

3523640516749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326105614.

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 3523640516749 in words is "three trillion, five hundred twenty-three billion, six hundred forty million, five hundred sixteen thousand, seven hundred forty-nine".