1649867912448 has 144 divisors (see below), whose sum is σ = 5078811634176. Its totient is φ = 465711298560.

The previous prime is 1649867912423. The next prime is 1649867912467. The reversal of 1649867912448 is 8442197689461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1402558 + ... + 2294973.

Almost surely, 2^{1649867912448} is an apocalyptic number.

It is an amenable number.

1649867912448 is an abundant number, since it is smaller than the sum of its proper divisors (3428943721728).

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

1649867912448 is an equidigital number, since it uses as much as digits as its factorization.

1649867912448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697640 (or 3697626 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 69.

The spelling of 1649867912448 in words is "one trillion, six hundred forty-nine billion, eight hundred sixty-seven million, nine hundred twelve thousand, four hundred forty-eight".