161063955 has 24 divisors (see below), whose sum is σ = 300653808. Its totient is φ = 79292736.

The previous prime is 161063891. The next prime is 161063957. The reversal of 161063955 is 559360161.

161063955 is a `hidden beast` number, since 1 + 6 + 10 + 639 + 5 + 5 = 666.

It is not a de Polignac number, because 161063955 - 2⁶ = 161063891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161063957) 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, 137077 + ... + 138246.

It is an arithmetic number, because the mean of its divisors is an integer number (12527242).

Almost surely, 2^161063955 is an apocalyptic number.

161063955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161063955 is a deficient number, since it is larger than the sum of its proper divisors (139589853).

161063955 is a wasteful number, since it uses less digits than its factorization.

161063955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275347 (or 275344 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 161063955 is about 12691.0974702742. The cubic root of 161063955 is about 544.0842067511.

The spelling of 161063955 in words is "one hundred sixty-one million, sixty-three thousand, nine hundred fifty-five".