1545222001309 has 32 divisors (see below), whose sum is σ = 1784654981120. Its totient is φ = 1310548377600.

The previous prime is 1545222001291. The next prime is 1545222001319. The reversal of 1545222001309 is 9031002225451.

It is not a de Polignac number, because 1545222001309 - 2⁹ = 1545222000797 is a prime.

It is a super-2 number, since 2×1545222001309² (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 (1545222001319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 322658287 + ... + 322663075.

It is an arithmetic number, because the mean of its divisors is an integer number (55770468160).

Almost surely, 2^{1545222001309} is an apocalyptic number.

It is an amenable number.

1545222001309 is a deficient number, since it is larger than the sum of its proper divisors (239432979811).

1545222001309 is a wasteful number, since it uses less digits than its factorization.

1545222001309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6221.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 1545222001309 in words is "one trillion, five hundred forty-five billion, two hundred twenty-two million, one thousand, three hundred nine".