161402273064 has 24 divisors (see below), whose sum is σ = 437131156410. Its totient is φ = 53800757664.

The previous prime is 161402273003. The next prime is 161402273077. The reversal of 161402273064 is 460372204161.

161402273064 is a `hidden beast` number, since 1 + 614 + 0 + 2 + 2 + 7 + 30 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 130062652164 + 31339620900 = 360642^2 + 177030^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1120849047 + ... + 1120849190.

Almost surely, 2^161402273064 is an apocalyptic number.

It is an amenable number.

161402273064 is an abundant number, since it is smaller than the sum of its proper divisors (275728883346).

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

161402273064 is a wasteful number, since it uses less digits than its factorization.

161402273064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241698249 (or 2241698242 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 161402273064 in words is "one hundred sixty-one billion, four hundred two million, two hundred seventy-three thousand, sixty-four".