85621461511 has 2 divisors, whose sum is σ = 85621461512. Its totient is φ = 85621461510.

The previous prime is 85621461493. The next prime is 85621461517. The reversal of 85621461511 is 11516412658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85621461511 - 2⁵ = 85621461479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85621461517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42810730755 + 42810730756.

It is an arithmetic number, because the mean of its divisors is an integer number (42810730756).

Almost surely, 2^85621461511 is an apocalyptic number.

85621461511 is a deficient number, since it is larger than the sum of its proper divisors (1).

85621461511 is an equidigital number, since it uses as much as digits as its factorization.

85621461511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 40.

The spelling of 85621461511 in words is "eighty-five billion, six hundred twenty-one million, four hundred sixty-one thousand, five hundred eleven".