85554495009 has 9 divisors (see below), whose sum is σ = 123579982513. Its totient is φ = 57035745012.

The previous prime is 85554494999. The next prime is 85554495043. The reversal of 85554495009 is 90059445558.

The square root of 85554495009 is 292497.

It is a perfect power (a square), and thus also a powerful number.

85554495009 is a `hidden beast` number, since 8 + 5 + 5 + 544 + 95 + 0 + 0 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 85554495009 - 2³³ = 76964560417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85554495079) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 828742 + ... + 926240.

Almost surely, 2^85554495009 is an apocalyptic number.

85554495009 is the 292497-th square number.

85554495009 is the 146249-th centered octagonal number.

It is an amenable number.

85554495009 is a deficient number, since it is larger than the sum of its proper divisors (38025487504).

85554495009 is an frugal number, since it uses more digits than its factorization.

85554495009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195004 (or 97502 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 54.

The spelling of 85554495009 in words is "eighty-five billion, five hundred fifty-four million, four hundred ninety-five thousand, nine".