1447078381649 has 8 divisors (see below), whose sum is σ = 1448485869312. Its totient is φ = 1445671262880.

The previous prime is 1447078381643. The next prime is 1447078381739. The reversal of 1447078381649 is 9461838707441.

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 1447078381649 - 2²⁸ = 1446809946193 is a prime.

It is a super-4 number, since 4×1447078381649⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1447078381591 and 1447078381600.

It is not an unprimeable number, because it can be changed into a prime (1447078381643) 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, 8109509 + ... + 8286029.

It is an arithmetic number, because the mean of its divisors is an integer number (181060733664).

Almost surely, 2^{1447078381649} is an apocalyptic number.

It is an amenable number.

1447078381649 is a deficient number, since it is larger than the sum of its proper divisors (1407487663).

1447078381649 is a wasteful number, since it uses less digits than its factorization.

1447078381649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184447.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 1447078381649 in words is "one trillion, four hundred forty-seven billion, seventy-eight million, three hundred eighty-one thousand, six hundred forty-nine".