161554700854 has 4 divisors (see below), whose sum is σ = 242332051284. Its totient is φ = 80777350426.

The previous prime is 161554700851. The next prime is 161554700861. The reversal of 161554700854 is 458007455161.

161554700854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161554700851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40388675212 + ... + 40388675215.

It is an arithmetic number, because the mean of its divisors is an integer number (60583012821).

Almost surely, 2^161554700854 is an apocalyptic number.

161554700854 is a deficient number, since it is larger than the sum of its proper divisors (80777350430).

161554700854 is an equidigital number, since it uses as much as digits as its factorization.

161554700854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80777350429.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 161554700854 in words is "one hundred sixty-one billion, five hundred fifty-four million, seven hundred thousand, eight hundred fifty-four".