16585394658 has 24 divisors (see below), whose sum is σ = 38586429072. Its totient is φ = 4738684104.

The previous prime is 16585394653. The next prime is 16585394659. The reversal of 16585394658 is 85649358561.

It is a super-2 number, since 2×16585394658² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16585394653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28206160 + ... + 28206747.

It is an arithmetic number, because the mean of its divisors is an integer number (1607767878).

Almost surely, 2^16585394658 is an apocalyptic number.

16585394658 is an abundant number, since it is smaller than the sum of its proper divisors (22001034414).

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

16585394658 is a wasteful number, since it uses less digits than its factorization.

16585394658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56412926 (or 56412919 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 60.

The spelling of 16585394658 in words is "sixteen billion, five hundred eighty-five million, three hundred ninety-four thousand, six hundred fifty-eight".