161059680 has 72 divisors (see below), whose sum is σ = 549621072. Its totient is φ = 42948864.

The previous prime is 161059667. The next prime is 161059693. The reversal of 161059680 is 86950161.

161059680 is a `hidden beast` number, since 1 + 61 + 0 + 596 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (161059667) and next prime (161059693).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54484 + ... + 57363.

It is an arithmetic number, because the mean of its divisors is an integer number (7633626).

Almost surely, 2^161059680 is an apocalyptic number.

161059680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161059680 is an abundant number, since it is smaller than the sum of its proper divisors (388561392).

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

161059680 is a wasteful number, since it uses less digits than its factorization.

161059680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111868 (or 111857 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 161059680 is about 12690.9290440062. The cubic root of 161059680 is about 544.0793929685.

The spelling of 161059680 in words is "one hundred sixty-one million, fifty-nine thousand, six hundred eighty".