161379960 has 128 divisors (see below), whose sum is σ = 577428480. Its totient is φ = 35278848.

The previous prime is 161379917. The next prime is 161379979. The reversal of 161379960 is 69973161.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15144 + ... + 23496.

It is an arithmetic number, because the mean of its divisors is an integer number (4511160).

Almost surely, 2^161379960 is an apocalyptic number.

161379960 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 161379960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288714240).

161379960 is an abundant number, since it is smaller than the sum of its proper divisors (416048520).

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

161379960 is a wasteful number, since it uses less digits than its factorization.

161379960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8397 (or 8393 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 161379960 is about 12703.5412385681. The cubic root of 161379960 is about 544.4398025735.

The spelling of 161379960 in words is "one hundred sixty-one million, three hundred seventy-nine thousand, nine hundred sixty".