1641289313450 has 12 divisors (see below), whose sum is σ = 3052798123110. Its totient is φ = 656515725360.

The previous prime is 1641289313399. The next prime is 1641289313527. The reversal of 1641289313450 is 543139821461.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 767395272121 + 873894041329 = 876011^2 + 934823^2 .

It is a super-2 number, since 2×1641289313450² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1641289313395 and 1641289313404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16412893085 + ... + 16412893184.

Almost surely, 2^{1641289313450} is an apocalyptic number.

1641289313450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1641289313450 is a deficient number, since it is larger than the sum of its proper divisors (1411508809660).

1641289313450 is a wasteful number, since it uses less digits than its factorization.

1641289313450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32825786281 (or 32825786276 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 1641289313450 in words is "one trillion, six hundred forty-one billion, two hundred eighty-nine million, three hundred thirteen thousand, four hundred fifty".