3802821817601 has 2 divisors, whose sum is σ = 3802821817602. Its totient is φ = 3802821817600.

The previous prime is 3802821817511. The next prime is 3802821817631. The reversal of 3802821817601 is 1067181282083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1978309762576 + 1824512055025 = 1406524^2 + 1350745^2 .

It is a cyclic number.

It is not a de Polignac number, because 3802821817601 - 2¹⁸ = 3802821555457 is a prime.

It is a super-2 number, since 2×3802821817601² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3802821817631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901410908800 + 1901410908801.

It is an arithmetic number, because the mean of its divisors is an integer number (1901410908801).

Almost surely, 2^{3802821817601} is an apocalyptic number.

It is an amenable number.

3802821817601 is a deficient number, since it is larger than the sum of its proper divisors (1).

3802821817601 is an equidigital number, since it uses as much as digits as its factorization.

3802821817601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 3802821817601 in words is "three trillion, eight hundred two billion, eight hundred twenty-one million, eight hundred seventeen thousand, six hundred one".