85854740521 has 16 divisors (see below), whose sum is σ = 94014180288. Its totient is φ = 77754931200.

The previous prime is 85854740513. The next prime is 85854740537. The reversal of 85854740521 is 12504745858.

It is a cyclic number.

It is not a de Polignac number, because 85854740521 - 2³ = 85854740513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85854747521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3219081 + ... + 3245641.

It is an arithmetic number, because the mean of its divisors is an integer number (5875886268).

Almost surely, 2^85854740521 is an apocalyptic number.

It is an amenable number.

85854740521 is a deficient number, since it is larger than the sum of its proper divisors (8159439767).

85854740521 is a wasteful number, since it uses less digits than its factorization.

85854740521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27672.

The product of its (nonzero) digits is 1792000, while the sum is 49.

The spelling of 85854740521 in words is "eighty-five billion, eight hundred fifty-four million, seven hundred forty thousand, five hundred twenty-one".