1409349561669 has 24 divisors (see below), whose sum is σ = 2328654711552. Its totient is φ = 804612428640.

The previous prime is 1409349561611. The next prime is 1409349561709. The reversal of 1409349561669 is 9661659439041.

1409349561669 is a `hidden beast` number, since 1 + 4 + 0 + 9 + 3 + 4 + 9 + 5 + 616 + 6 + 9 = 666.

It is not a de Polignac number, because 1409349561669 - 2⁹ = 1409349561157 is a prime.

It is a super-2 number, since 2×1409349561669² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409349161669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10071322 + ... + 10210299.

It is an arithmetic number, because the mean of its divisors is an integer number (97027279648).

Almost surely, 2^{1409349561669} is an apocalyptic number.

It is an amenable number.

1409349561669 is a deficient number, since it is larger than the sum of its proper divisors (919305149883).

1409349561669 is a wasteful number, since it uses less digits than its factorization.

1409349561669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20282737 (or 20282734 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 63.

The spelling of 1409349561669 in words is "one trillion, four hundred nine billion, three hundred forty-nine million, five hundred sixty-one thousand, six hundred sixty-nine".