85747125017 has 4 divisors (see below), whose sum is σ = 85781885136. Its totient is φ = 85712364900.

The previous prime is 85747124929. The next prime is 85747125019. The reversal of 85747125017 is 71052174758.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71052174758 = 2 ⋅35526087379.

It is a cyclic number.

It is not a de Polignac number, because 85747125017 - 2¹⁴ = 85747108633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85747125019) 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, 17376359 + ... + 17381292.

It is an arithmetic number, because the mean of its divisors is an integer number (21445471284).

Almost surely, 2^85747125017 is an apocalyptic number.

It is an amenable number.

85747125017 is a deficient number, since it is larger than the sum of its proper divisors (34760119).

85747125017 is a wasteful number, since it uses less digits than its factorization.

85747125017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34760118.

The product of its (nonzero) digits is 548800, while the sum is 47.

The spelling of 85747125017 in words is "eighty-five billion, seven hundred forty-seven million, one hundred twenty-five thousand, seventeen".