104211243581 has 2 divisors, whose sum is σ = 104211243582. Its totient is φ = 104211243580.

The previous prime is 104211243473. The next prime is 104211243607. The reversal of 104211243581 is 185342112401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60557827225 + 43653416356 = 246085^2 + 208934^2 .

It is a cyclic number.

It is not a de Polignac number, because 104211243581 - 2¹⁰ = 104211242557 is a prime.

It is a super-2 number, since 2×104211243581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104211263581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52105621790 + 52105621791.

It is an arithmetic number, because the mean of its divisors is an integer number (52105621791).

Almost surely, 2^104211243581 is an apocalyptic number.

It is an amenable number.

104211243581 is a deficient number, since it is larger than the sum of its proper divisors (1).

104211243581 is an equidigital number, since it uses as much as digits as its factorization.

104211243581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 32.

Adding to 104211243581 its reverse (185342112401), we get a palindrome (289553355982).

The spelling of 104211243581 in words is "one hundred four billion, two hundred eleven million, two hundred forty-three thousand, five hundred eighty-one".