106374221638 has 4 divisors (see below), whose sum is σ = 159561332460. Its totient is φ = 53187110818.

The previous prime is 106374221621. The next prime is 106374221663. The reversal of 106374221638 is 836122473601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836122473601 = 19 ⋅44006445979.

It is a super-3 number, since 3×106374221638³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 106374221594 and 106374221603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26593555408 + ... + 26593555411.

It is an arithmetic number, because the mean of its divisors is an integer number (39890333115).

Almost surely, 2^106374221638 is an apocalyptic number.

106374221638 is a deficient number, since it is larger than the sum of its proper divisors (53187110822).

106374221638 is an equidigital number, since it uses as much as digits as its factorization.

106374221638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53187110821.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 106374221638 in words is "one hundred six billion, three hundred seventy-four million, two hundred twenty-one thousand, six hundred thirty-eight".