85874121517857 has 8 divisors (see below), whose sum is σ = 120525082832160. Its totient is φ = 54236287274400.

The previous prime is 85874121517837. The next prime is 85874121517907. The reversal of 85874121517857 is 75871512147858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85874121517857 - 2²⁰ = 85874120469281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85874121517791 and 85874121517800.

It is not an unprimeable number, because it can be changed into a prime (85874121517837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753281767644 + ... + 753281767757.

It is an arithmetic number, because the mean of its divisors is an integer number (15065635354020).

Almost surely, 2^{85874121517857} is an apocalyptic number.

It is an amenable number.

85874121517857 is a deficient number, since it is larger than the sum of its proper divisors (34650961314303).

85874121517857 is a wasteful number, since it uses less digits than its factorization.

85874121517857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506563535423.

The product of its digits is 175616000, while the sum is 69.

The spelling of 85874121517857 in words is "eighty-five trillion, eight hundred seventy-four billion, one hundred twenty-one million, five hundred seventeen thousand, eight hundred fifty-seven".