161020723254 has 8 divisors (see below), whose sum is σ = 322041446520. Its totient is φ = 53673574416.

The previous prime is 161020723189. The next prime is 161020723261. The reversal of 161020723254 is 452327020161.

161020723254 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

161020723254 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13418393599 + ... + 13418393610.

It is an arithmetic number, because the mean of its divisors is an integer number (40255180815).

Almost surely, 2^161020723254 is an apocalyptic number.

161020723254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161020723254 is a wasteful number, since it uses less digits than its factorization.

161020723254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26836787214.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 161020723254 in words is "one hundred sixty-one billion, twenty million, seven hundred twenty-three thousand, two hundred fifty-four".