85506381007 has 4 divisors (see below), whose sum is σ = 85538565216. Its totient is φ = 85474196800.

The previous prime is 85506381001. The next prime is 85506381031. The reversal of 85506381007 is 70018360558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85506381007 - 2²³ = 85497992399 is a prime.

It is a super-3 number, since 3×85506381007³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85506381001) 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, 16088119 + ... + 16093432.

It is an arithmetic number, because the mean of its divisors is an integer number (21384641304).

Almost surely, 2^85506381007 is an apocalyptic number.

85506381007 is a deficient number, since it is larger than the sum of its proper divisors (32184209).

85506381007 is a wasteful number, since it uses less digits than its factorization.

85506381007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32184208.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 85506381007 in words is "eighty-five billion, five hundred six million, three hundred eighty-one thousand, seven".