166284167540 has 24 divisors (see below), whose sum is σ = 369737737992. Its totient is φ = 62601098240.

The previous prime is 166284167531. The next prime is 166284167551. The reversal of 166284167540 is 45761482661.

It can be written as a sum of positive squares in 4 ways, for example, as 4340701456 + 161943466084 = 65884^2 + 402422^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244535201 + ... + 244535880.

It is an arithmetic number, because the mean of its divisors is an integer number (15405739083).

Almost surely, 2^166284167540 is an apocalyptic number.

166284167540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166284167540 is an abundant number, since it is smaller than the sum of its proper divisors (203453570452).

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

166284167540 is a wasteful number, since it uses less digits than its factorization.

166284167540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489071107 (or 489071105 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 166284167540 in words is "one hundred sixty-six billion, two hundred eighty-four million, one hundred sixty-seven thousand, five hundred forty".