1641104475136 has 495 divisors, whose sum is σ = 4135295426751. Its totient is φ = 650817441792.

The previous prime is 1641104475083. The next prime is 1641104475161. The reversal of 1641104475136 is 6315744011461.

The square root of 1641104475136 is 1281056.

It is a perfect power (a square), and thus also a powerful number.

It is a super-3 number, since 3×1641104475136³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1641104475092 and 1641104475101.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 38165220331 + ... + 38165220373.

Almost surely, 2^{1641104475136} is an apocalyptic number.

1641104475136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1641104475136 is the 1281056-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641104475136

1641104475136 is an abundant number, since it is smaller than the sum of its proper divisors (2494190951615).

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

1641104475136 is an frugal number, since it uses more digits than its factorization.

1641104475136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

Adding to 1641104475136 its reverse (6315744011461), we get a palindrome (7956848486597).

The spelling of 1641104475136 in words is "one trillion, six hundred forty-one billion, one hundred four million, four hundred seventy-five thousand, one hundred thirty-six".