161448071878 has 8 divisors (see below), whose sum is σ = 252701329968. Its totient is φ = 77214295224.

The previous prime is 161448071821. The next prime is 161448071893. The reversal of 161448071878 is 878170844161.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1754870301 + ... + 1754870392.

It is an arithmetic number, because the mean of its divisors is an integer number (31587666246).

Almost surely, 2^161448071878 is an apocalyptic number.

161448071878 is a deficient number, since it is larger than the sum of its proper divisors (91253258090).

161448071878 is a wasteful number, since it uses less digits than its factorization.

161448071878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509740718.

The product of its (nonzero) digits is 2408448, while the sum is 55.

The spelling of 161448071878 in words is "one hundred sixty-one billion, four hundred forty-eight million, seventy-one thousand, eight hundred seventy-eight".