398077170160 has 80 divisors (see below), whose sum is σ = 940094964000. Its totient is φ = 156733747200.

The previous prime is 398077170151. The next prime is 398077170163. The reversal of 398077170160 is 61071770893.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398077170163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2845860 + ... + 2982460.

It is an arithmetic number, because the mean of its divisors is an integer number (11751187050).

Almost surely, 2^398077170160 is an apocalyptic number.

398077170160 is the 364270-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398077170160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470047482000).

398077170160 is an abundant number, since it is smaller than the sum of its proper divisors (542017793840).

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

398077170160 is a wasteful number, since it uses less digits than its factorization.

398077170160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137186 (or 137180 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 49.

The spelling of 398077170160 in words is "three hundred ninety-eight billion, seventy-seven million, one hundred seventy thousand, one hundred sixty".