85618570801 has 2 divisors, whose sum is σ = 85618570802. Its totient is φ = 85618570800.

The previous prime is 85618570781. The next prime is 85618570847. The reversal of 85618570801 is 10807581658.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73670987776 + 11947583025 = 271424^2 + 109305^2 .

It is a cyclic number.

It is not a de Polignac number, because 85618570801 - 2¹¹ = 85618568753 is a prime.

It is not a weakly prime, because it can be changed into another prime (85618570861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42809285400 + 42809285401.

It is an arithmetic number, because the mean of its divisors is an integer number (42809285401).

Almost surely, 2^85618570801 is an apocalyptic number.

It is an amenable number.

85618570801 is a deficient number, since it is larger than the sum of its proper divisors (1).

85618570801 is an equidigital number, since it uses as much as digits as its factorization.

85618570801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 49.

The spelling of 85618570801 in words is "eighty-five billion, six hundred eighteen million, five hundred seventy thousand, eight hundred one".