1445672437213 has 4 divisors (see below), whose sum is σ = 1495523210940. Its totient is φ = 1395821663488.

The previous prime is 1445672437201. The next prime is 1445672437217. The reversal of 1445672437213 is 3127342765441.

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 1075694642649 + 369977794564 = 1037157^2 + 608258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445672437213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445672437217) 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, 24925386820 + ... + 24925386877.

It is an arithmetic number, because the mean of its divisors is an integer number (373880802735).

Almost surely, 2^{1445672437213} is an apocalyptic number.

It is an amenable number.

1445672437213 is a deficient number, since it is larger than the sum of its proper divisors (49850773727).

1445672437213 is an equidigital number, since it uses as much as digits as its factorization.

1445672437213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49850773726.

The product of its digits is 3386880, while the sum is 49.

The spelling of 1445672437213 in words is "one trillion, four hundred forty-five billion, six hundred seventy-two million, four hundred thirty-seven thousand, two hundred thirteen".