3621404291813 has 24 divisors (see below), whose sum is σ = 4595804673120. Its totient is φ = 2821761623520.

The previous prime is 3621404291779. The next prime is 3621404291831. The reversal of 3621404291813 is 3181924041263.

It is not a de Polignac number, because 3621404291813 - 2¹⁴ = 3621404275429 is a prime.

It is a super-2 number, since 2×3621404291813² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621404291833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15090995 + ... + 15329087.

It is an arithmetic number, because the mean of its divisors is an integer number (191491861380).

Almost surely, 2^{3621404291813} is an apocalyptic number.

It is an amenable number.

3621404291813 is a deficient number, since it is larger than the sum of its proper divisors (974400381307).

3621404291813 is a wasteful number, since it uses less digits than its factorization.

3621404291813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266337 (or 266330 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 3621404291813 in words is "three trillion, six hundred twenty-one billion, four hundred four million, two hundred ninety-one thousand, eight hundred thirteen".