161914885473 has 8 divisors (see below), whose sum is σ = 235512560736. Its totient is φ = 98130233600.

The previous prime is 161914885469. The next prime is 161914885547. The reversal of 161914885473 is 374588419161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161914885473 - 2² = 161914885469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161914885073) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2453255808 + ... + 2453255873.

It is an arithmetic number, because the mean of its divisors is an integer number (29439070092).

Almost surely, 2^161914885473 is an apocalyptic number.

It is an amenable number.

161914885473 is a deficient number, since it is larger than the sum of its proper divisors (73597675263).

161914885473 is a wasteful number, since it uses less digits than its factorization.

161914885473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906511695.

The product of its digits is 5806080, while the sum is 57.

The spelling of 161914885473 in words is "one hundred sixty-one billion, nine hundred fourteen million, eight hundred eighty-five thousand, four hundred seventy-three".