85618570847 has 2 divisors, whose sum is σ = 85618570848. Its totient is φ = 85618570846.

The previous prime is 85618570801. The next prime is 85618570861. The reversal of 85618570847 is 74807581658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85618570847 - 2³² = 81323603551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85618590847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42809285423 + 42809285424.

It is an arithmetic number, because the mean of its divisors is an integer number (42809285424).

Almost surely, 2^85618570847 is an apocalyptic number.

85618570847 is a deficient number, since it is larger than the sum of its proper divisors (1).

85618570847 is an equidigital number, since it uses as much as digits as its factorization.

85618570847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15052800, while the sum is 59.

The spelling of 85618570847 in words is "eighty-five billion, six hundred eighteen million, five hundred seventy thousand, eight hundred forty-seven".