10020585816 has 40 divisors (see below), whose sum is σ = 28066920420. Its totient is φ = 3340195056.

The previous prime is 10020585811. The next prime is 10020585833. The reversal of 10020585816 is 61858502001.

10020585816 is a `hidden beast` number, since 1 + 0 + 0 + 20 + 58 + 581 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020585811) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7731286 + ... + 7732581.

Almost surely, 2^10020585816 is an apocalyptic number.

It is an amenable number.

10020585816 is an abundant number, since it is smaller than the sum of its proper divisors (18046334604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10020585816 is a wasteful number, since it uses less digits than its factorization.

10020585816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15463885 (or 15463872 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 10020585816 in words is "ten billion, twenty million, five hundred eighty-five thousand, eight hundred sixteen".