166824983840 has 24 divisors (see below), whose sum is σ = 394124024700. Its totient is φ = 66729993472.

The previous prime is 166824983779. The next prime is 166824983863. The reversal of 166824983840 is 48389428661.

It is a happy number.

166824983840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 140142414736 + 26682569104 = 374356^2 + 163348^2 .

It is a super-2 number, since 2×166824983840² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166824983840.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 521327915 + ... + 521328234.

Almost surely, 2^166824983840 is an apocalyptic number.

166824983840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166824983840 is an abundant number, since it is smaller than the sum of its proper divisors (227299040860).

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

166824983840 is a wasteful number, since it uses less digits than its factorization.

166824983840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042656164 (or 1042656156 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 59.

The spelling of 166824983840 in words is "one hundred sixty-six billion, eight hundred twenty-four million, nine hundred eighty-three thousand, eight hundred forty".