16161857585910 has 48 divisors (see below), whose sum is σ = 42021233575776. Its totient is φ = 4309787268864.

The previous prime is 16161857585903. The next prime is 16161857585947. The reversal of 16161857585910 is 1958575816161.

It is a happy number.

16161857585910 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 1 + 8 + 575 + 8 + 59 + 1 + 0 = 666.

It is a super-2 number, since 2×16161857585910² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9202207 + ... + 10816853.

It is an arithmetic number, because the mean of its divisors is an integer number (875442366162).

Almost surely, 2^{16161857585910} is an apocalyptic number.

16161857585910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16161857585910 is an abundant number, since it is smaller than the sum of its proper divisors (25859375989866).

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

16161857585910 is a wasteful number, since it uses less digits than its factorization.

16161857585910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725877 (or 1725874 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 63.

The spelling of 16161857585910 in words is "sixteen trillion, one hundred sixty-one billion, eight hundred fifty-seven million, five hundred eighty-five thousand, nine hundred ten".