166289237020 has 12 divisors (see below), whose sum is σ = 349207397784. Its totient is φ = 66515694800.

The previous prime is 166289236999. The next prime is 166289237041. The reversal of 166289237020 is 20732982661.

166289237020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166289236999) and next prime (166289237041).

It is a super-2 number, since 2×166289237020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 4157230906 + ... + 4157230945.

It is an arithmetic number, because the mean of its divisors is an integer number (29100616482).

Almost surely, 2^166289237020 is an apocalyptic number.

166289237020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166289237020 is an abundant number, since it is smaller than the sum of its proper divisors (182918160764).

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

166289237020 is a wasteful number, since it uses less digits than its factorization.

166289237020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8314461860 (or 8314461858 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 166289237020 in words is "one hundred sixty-six billion, two hundred eighty-nine million, two hundred thirty-seven thousand, twenty".