1481440670447 has 4 divisors (see below), whose sum is σ = 1481445485520. Its totient is φ = 1481435855376.

The previous prime is 1481440670389. The next prime is 1481440670471. The reversal of 1481440670447 is 7440760441841.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1481440670447 - 2¹² = 1481440666351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1481440670395 and 1481440670404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481440678447) 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, 1912043 + ... + 2572700.

It is an arithmetic number, because the mean of its divisors is an integer number (370361371380).

Almost surely, 2^{1481440670447} is an apocalyptic number.

1481440670447 is a deficient number, since it is larger than the sum of its proper divisors (4815073).

1481440670447 is an equidigital number, since it uses as much as digits as its factorization.

1481440670447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815072.

The product of its (nonzero) digits is 2408448, while the sum is 50.

The spelling of 1481440670447 in words is "one trillion, four hundred eighty-one billion, four hundred forty million, six hundred seventy thousand, four hundred forty-seven".