85702535881 has 2 divisors, whose sum is σ = 85702535882. Its totient is φ = 85702535880.

The previous prime is 85702535879. The next prime is 85702535903. The reversal of 85702535881 is 18853520758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84934359225 + 768176656 = 291435^2 + 27716^2 .

It is a cyclic number.

It is not a de Polignac number, because 85702535881 - 2¹ = 85702535879 is a prime.

It is a super-2 number, since 2×85702535881² (a number of 23 digits) contains 22 as substring.

Together with 85702535879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85702535981) 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, 42851267940 + 42851267941.

It is an arithmetic number, because the mean of its divisors is an integer number (42851267941).

Almost surely, 2^85702535881 is an apocalyptic number.

It is an amenable number.

85702535881 is a deficient number, since it is larger than the sum of its proper divisors (1).

85702535881 is an equidigital number, since it uses as much as digits as its factorization.

85702535881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688000, while the sum is 52.

The spelling of 85702535881 in words is "eighty-five billion, seven hundred two million, five hundred thirty-five thousand, eight hundred eighty-one".