3985398749611 has 2 divisors, whose sum is σ = 3985398749612. Its totient is φ = 3985398749610.

The previous prime is 3985398749561. The next prime is 3985398749627. The reversal of 3985398749611 is 1169478935893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3985398749611 - 2²¹ = 3985396652459 is a prime.

It is not a weakly prime, because it can be changed into another prime (3985398749641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992699374805 + 1992699374806.

It is an arithmetic number, because the mean of its divisors is an integer number (1992699374806).

Almost surely, 2^{3985398749611} is an apocalyptic number.

3985398749611 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985398749611 is an equidigital number, since it uses as much as digits as its factorization.

3985398749611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352719360, while the sum is 73.

The spelling of 3985398749611 in words is "three trillion, nine hundred eighty-five billion, three hundred ninety-eight million, seven hundred forty-nine thousand, six hundred eleven".