166870880736 has 96 divisors (see below), whose sum is σ = 501072864768. Its totient is φ = 47633564160.

The previous prime is 166870880731. The next prime is 166870880741. The reversal of 166870880736 is 637088078661.

It is an interprime number because it is at equal distance from previous prime (166870880731) and next prime (166870880741).

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 166870880736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166870880731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620901 + ... + 848091.

It is an arithmetic number, because the mean of its divisors is an integer number (5219509008).

Almost surely, 2^166870880736 is an apocalyptic number.

166870880736 is a gapful number since it is divisible by the number (16) 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 166870880736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250536432384).

166870880736 is an abundant number, since it is smaller than the sum of its proper divisors (334201984032).

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

166870880736 is a wasteful number, since it uses less digits than its factorization.

166870880736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228304 (or 228296 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 166870880736 in words is "one hundred sixty-six billion, eight hundred seventy million, eight hundred eighty thousand, seven hundred thirty-six".