166668335370 has 40 divisors (see below), whose sum is σ = 448152637284. Its totient is φ = 44444889216.

The previous prime is 166668335341. The next prime is 166668335381. The reversal of 166668335370 is 73533866661.

It is a happy number.

166668335370 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 145570482369 + 21097853001 = 381537^2 + 145251^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

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 19 ways as a sum of consecutive naturals, for example, 102880879 + ... + 102882498.

Almost surely, 2^166668335370 is an apocalyptic number.

166668335370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166668335370 is an abundant number, since it is smaller than the sum of its proper divisors (281484301914).

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

166668335370 is a wasteful number, since it uses less digits than its factorization.

166668335370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205763396 (or 205763387 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 54.

The spelling of 166668335370 in words is "one hundred sixty-six billion, six hundred sixty-eight million, three hundred thirty-five thousand, three hundred seventy".