85008158077 has 4 divisors (see below), whose sum is σ = 89482271680.
Its totient is φ = 80534044476.
The previous prime is 85008158023. The next prime is 85008158107. The reversal of 85008158077 is 77085180058.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 85008158077 - 211 = 85008156029 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 85008158077.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (85008158177) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2237056773 + ... + 2237056810.
It is an arithmetic number, because the mean of its divisors is an integer number (22370567920).
Almost surely, 285008158077 is an apocalyptic number.
It is an amenable number.
85008158077 is a deficient number, since it is larger than the sum of its proper divisors (4474113603).
85008158077 is a wasteful number, since it uses less digits than its factorization.
85008158077 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4474113602.
The product of its (nonzero) digits is 627200, while the sum is 49.
The spelling of 85008158077 in words is "eighty-five billion, eight million, one hundred fifty-eight thousand, seventy-seven".