16166212540 has 48 divisors (see below), whose sum is σ = 34066569600. Its totient is φ = 6444148032.

The previous prime is 16166212523. The next prime is 16166212541. The reversal of 16166212540 is 4521266161.

It is a super-2 number, since 2×16166212540² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16166212496 and 16166212505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16166212541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10237471 + ... + 10239049.

It is an arithmetic number, because the mean of its divisors is an integer number (709720200).

Almost surely, 2^16166212540 is an apocalyptic number.

16166212540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16166212540 is an abundant number, since it is smaller than the sum of its proper divisors (17900357060).

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

16166212540 is a wasteful number, since it uses less digits than its factorization.

16166212540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034 (or 3032 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

It can be divided in two parts, 1616621 and 2540, that added together give a palindrome (1619161).

The spelling of 16166212540 in words is "sixteen billion, one hundred sixty-six million, two hundred twelve thousand, five hundred forty".