168377381075 has 24 divisors (see below), whose sum is σ = 219838072320. Its totient is φ = 127576749600.

The previous prime is 168377381071. The next prime is 168377381089. The reversal of 168377381075 is 570183773861.

It is a happy number.

It is not a de Polignac number, because 168377381075 - 2² = 168377381071 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 168377381075.

It is not an unprimeable number, because it can be changed into a prime (168377381071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1722770 + ... + 1817880.

It is an arithmetic number, because the mean of its divisors is an integer number (9159919680).

Almost surely, 2^168377381075 is an apocalyptic number.

168377381075 is a deficient number, since it is larger than the sum of its proper divisors (51460691245).

168377381075 is a wasteful number, since it uses less digits than its factorization.

168377381075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98867 (or 98862 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 168377381075 in words is "one hundred sixty-eight billion, three hundred seventy-seven million, three hundred eighty-one thousand, seventy-five".