1449661329401 has 4 divisors (see below), whose sum is σ = 1449663886692. Its totient is φ = 1449658772112.

The previous prime is 1449661329377. The next prime is 1449661329407. The reversal of 1449661329401 is 1049231669441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 492347805625 + 957313523776 = 701675^2 + 978424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1449661329401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1449661329401.

It is not an unprimeable number, because it can be changed into a prime (1449661329407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6326 + ... + 1702751.

It is an arithmetic number, because the mean of its divisors is an integer number (362415971673).

Almost surely, 2^{1449661329401} is an apocalyptic number.

It is an amenable number.

1449661329401 is a deficient number, since it is larger than the sum of its proper divisors (2557291).

1449661329401 is an equidigital number, since it uses as much as digits as its factorization.

1449661329401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557290.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 1449661329401 in words is "one trillion, four hundred forty-nine billion, six hundred sixty-one million, three hundred twenty-nine thousand, four hundred one".