1616997884449 has 8 divisors (see below), whose sum is σ = 1669175384832. Its totient is φ = 1564821401520.

The previous prime is 1616997884443. The next prime is 1616997884483. The reversal of 1616997884449 is 9444887996161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1616997884449 - 2³ = 1616997884441 is a prime.

It is a super-2 number, since 2×1616997884449² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616997884441) 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 7 ways as a sum of consecutive naturals, for example, 4231347 + ... + 4597639.

It is an arithmetic number, because the mean of its divisors is an integer number (208646923104).

Almost surely, 2^{1616997884449} is an apocalyptic number.

It is an amenable number.

1616997884449 is a deficient number, since it is larger than the sum of its proper divisors (52177500383).

1616997884449 is a wasteful number, since it uses less digits than its factorization.

1616997884449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508727.

The product of its digits is 752467968, while the sum is 76.

The spelling of 1616997884449 in words is "one trillion, six hundred sixteen billion, nine hundred ninety-seven million, eight hundred eighty-four thousand, four hundred forty-nine".