3641099969905 has 4 divisors (see below), whose sum is σ = 4369319963892. Its totient is φ = 2912879975920.

The previous prime is 3641099969893. The next prime is 3641099969939. The reversal of 3641099969905 is 5099699901463.

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 1694706672481 + 1946393297424 = 1301809^2 + 1395132^2 .

It is not a de Polignac number, because 3641099969905 - 2⁹ = 3641099969393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364109996986 + ... + 364109996995.

It is an arithmetic number, because the mean of its divisors is an integer number (1092329990973).

Almost surely, 2^{3641099969905} is an apocalyptic number.

It is an amenable number.

3641099969905 is a deficient number, since it is larger than the sum of its proper divisors (728219993987).

3641099969905 is an equidigital number, since it uses as much as digits as its factorization.

3641099969905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728219993986.

The product of its (nonzero) digits is 127545840, while the sum is 70.

The spelling of 3641099969905 in words is "three trillion, six hundred forty-one billion, ninety-nine million, nine hundred sixty-nine thousand, nine hundred five".