1445209306973 has 16 divisors (see below), whose sum is σ = 1454371799040. Its totient is φ = 1436084732016.

The previous prime is 1445209306903. The next prime is 1445209306997. The reversal of 1445209306973 is 3796039025441.

It is a cyclic number.

It is not a de Polignac number, because 1445209306973 - 2¹² = 1445209302877 is a prime.

It is a super-2 number, since 2×1445209306973² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445209306903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122065988 + ... + 122077826.

It is an arithmetic number, because the mean of its divisors is an integer number (90898237440).

Almost surely, 2^{1445209306973} is an apocalyptic number.

It is an amenable number.

1445209306973 is a deficient number, since it is larger than the sum of its proper divisors (9162492067).

1445209306973 is a wasteful number, since it uses less digits than its factorization.

1445209306973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13376.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 1445209306973 in words is "one trillion, four hundred forty-five billion, two hundred nine million, three hundred six thousand, nine hundred seventy-three".