161282357438 has 8 divisors (see below), whose sum is σ = 241948731288. Its totient is φ = 80632780344.

The previous prime is 161282357399. The next prime is 161282357441. The reversal of 161282357438 is 834753282161.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4175156 + ... + 4213607.

It is an arithmetic number, because the mean of its divisors is an integer number (30243591411).

Almost surely, 2^161282357438 is an apocalyptic number.

161282357438 is a deficient number, since it is larger than the sum of its proper divisors (80666373850).

161282357438 is an equidigital number, since it uses as much as digits as its factorization.

161282357438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398378.

The product of its digits is 1935360, while the sum is 50.

The spelling of 161282357438 in words is "one hundred sixty-one billion, two hundred eighty-two million, three hundred fifty-seven thousand, four hundred thirty-eight".