85807868100869 has 4 divisors (see below), whose sum is σ = 86041677006144. Its totient is φ = 85574059195596.

The previous prime is 85807868100863. The next prime is 85807868100923. The reversal of 85807868100869 is 96800186870858.

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 85807868100869 - 2⁸ = 85807868100613 is a prime.

It is a super-2 number, since 2×85807868100869² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85807868100796 and 85807868100805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85807868100863) 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, 116904452087 + ... + 116904452820.

It is an arithmetic number, because the mean of its divisors is an integer number (21510419251536).

Almost surely, 2^{85807868100869} is an apocalyptic number.

It is an amenable number.

85807868100869 is a deficient number, since it is larger than the sum of its proper divisors (233808905275).

85807868100869 is a wasteful number, since it uses less digits than its factorization.

85807868100869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233808905274.

The product of its (nonzero) digits is 371589120, while the sum is 74.

The spelling of 85807868100869 in words is "eighty-five trillion, eight hundred seven billion, eight hundred sixty-eight million, one hundred thousand, eight hundred sixty-nine".