1445647005947 has 2 divisors, whose sum is σ = 1445647005948. Its totient is φ = 1445647005946.

The previous prime is 1445647005893. The next prime is 1445647005967. The reversal of 1445647005947 is 7495007465441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1445647005947 - 2⁶ = 1445647005883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1445647005892 and 1445647005901.

It is not a weakly prime, because it can be changed into another prime (1445647005967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722823502973 + 722823502974.

It is an arithmetic number, because the mean of its divisors is an integer number (722823502974).

Almost surely, 2^{1445647005947} is an apocalyptic number.

1445647005947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445647005947 is an equidigital number, since it uses as much as digits as its factorization.

1445647005947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 1445647005947 in words is "one trillion, four hundred forty-five billion, six hundred forty-seven million, five thousand, nine hundred forty-seven".