85747494081 has 8 divisors (see below), whose sum is σ = 114360405984. Its totient is φ = 57149789120.

The previous prime is 85747494071. The next prime is 85747494121. The reversal of 85747494081 is 18049474758.

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

It is a cyclic number.

It is not a de Polignac number, because 85747494081 - 2¹⁹ = 85746969793 is a prime.

It is a super-2 number, since 2×85747494081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85747494011) 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, 3788571 + ... + 3811136.

It is an arithmetic number, because the mean of its divisors is an integer number (14295050748).

Almost surely, 2^85747494081 is an apocalyptic number.

It is an amenable number.

85747494081 is a deficient number, since it is larger than the sum of its proper divisors (28612911903).

85747494081 is a wasteful number, since it uses less digits than its factorization.

85747494081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7603471.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 85747494081 in words is "eighty-five billion, seven hundred forty-seven million, four hundred ninety-four thousand, eighty-one".