1445678972611 has 4 divisors (see below), whose sum is σ = 1450613030832. Its totient is φ = 1440744914392.

The previous prime is 1445678972603. The next prime is 1445678972671. The reversal of 1445678972611 is 1162798765441.

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 1445678972611 - 2³ = 1445678972603 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 1445678972611.

It is not an unprimeable number, because it can be changed into a prime (1445678972671) 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, 2467028671 + ... + 2467029256.

It is an arithmetic number, because the mean of its divisors is an integer number (362653257708).

Almost surely, 2^{1445678972611} is an apocalyptic number.

1445678972611 is a deficient number, since it is larger than the sum of its proper divisors (4934058221).

1445678972611 is an equidigital number, since it uses as much as digits as its factorization.

1445678972611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934058220.

The product of its digits is 20321280, while the sum is 61.

The spelling of 1445678972611 in words is "one trillion, four hundred forty-five billion, six hundred seventy-eight million, nine hundred seventy-two thousand, six hundred eleven".