16166661610 has 64 divisors (see below), whose sum is σ = 32923065600. Its totient is φ = 5661734400.

The previous prime is 16166661607. The next prime is 16166661631. The reversal of 16166661610 is 1616666161.

It is a super-2 number, since 2×16166661610² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1298515 + ... + 1310905.

It is an arithmetic number, because the mean of its divisors is an integer number (514422900).

Almost surely, 2^16166661610 is an apocalyptic number.

16166661610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16166661610 is an abundant number, since it is smaller than the sum of its proper divisors (16756403990).

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

16166661610 is a wasteful number, since it uses less digits than its factorization.

16166661610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12847.

The product of its (nonzero) digits is 46656, while the sum is 40.

It can be divided in two parts, 16166 and 661610, that added together give a palindrome (677776).

The spelling of 16166661610 in words is "sixteen billion, one hundred sixty-six million, six hundred sixty-one thousand, six hundred ten".