166662437340 has 192 divisors, whose sum is σ = 536798997504. Its totient is φ = 37846351872.

The previous prime is 166662437299. The next prime is 166662437341. The reversal of 166662437340 is 43734266661.

It is a self number, because there is not a number n which added to its sum of digits gives 166662437340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166662437341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95398347 + ... + 95400093.

It is an arithmetic number, because the mean of its divisors is an integer number (2795828112).

Almost surely, 2^166662437340 is an apocalyptic number.

166662437340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166662437340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268399498752).

166662437340 is an abundant number, since it is smaller than the sum of its proper divisors (370136560164).

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

166662437340 is a wasteful number, since it uses less digits than its factorization.

166662437340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116 (or 3114 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 48.

The spelling of 166662437340 in words is "one hundred sixty-six billion, six hundred sixty-two million, four hundred thirty-seven thousand, three hundred forty".