1601697760811 has 2 divisors, whose sum is σ = 1601697760812. Its totient is φ = 1601697760810.

The previous prime is 1601697760783. The next prime is 1601697760813. The reversal of 1601697760811 is 1180677961061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1601697760811 - 2²⁶ = 1601630651947 is a prime.

Together with 1601697760813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1601697760813) 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 as a sum of consecutive naturals, namely, 800848880405 + 800848880406.

It is an arithmetic number, because the mean of its divisors is an integer number (800848880406).

Almost surely, 2^{1601697760811} is an apocalyptic number.

1601697760811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601697760811 is an equidigital number, since it uses as much as digits as its factorization.

1601697760811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 53.

The spelling of 1601697760811 in words is "one trillion, six hundred one billion, six hundred ninety-seven million, seven hundred sixty thousand, eight hundred eleven".