85621461811 has 2 divisors, whose sum is σ = 85621461812. Its totient is φ = 85621461810.

The previous prime is 85621461797. The next prime is 85621461883. The reversal of 85621461811 is 11816412658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85621461811 - 2²⁷ = 85487244083 is a prime.

It is not a weakly prime, because it can be changed into another prime (85621461511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42810730905 + 42810730906.

It is an arithmetic number, because the mean of its divisors is an integer number (42810730906).

Almost surely, 2^85621461811 is an apocalyptic number.

85621461811 is a deficient number, since it is larger than the sum of its proper divisors (1).

85621461811 is an equidigital number, since it uses as much as digits as its factorization.

85621461811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 43.

The spelling of 85621461811 in words is "eighty-five billion, six hundred twenty-one million, four hundred sixty-one thousand, eight hundred eleven".