999292561345 has 32 divisors (see below), whose sum is σ = 1300983012000. Its totient is φ = 732476473344.

The previous prime is 999292561343. The next prime is 999292561447. The reversal of 999292561345 is 543165292999.

It can be written as a sum of positive squares in 16 ways, for example, as 244466958096 + 754825603249 = 494436^2 + 868807^2 .

It is a 4-Lehmer number, since φ(999292561345) divides (999292561345-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 999292561345 - 2¹ = 999292561343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999292561343) 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, 5544001 + ... + 5721409.

It is an arithmetic number, because the mean of its divisors is an integer number (40655719125).

It is a Poulet number, since it divides 2^999292561344-1.

Almost surely, 2^999292561345 is an apocalyptic number.

It is an amenable number.

999292561345 is a deficient number, since it is larger than the sum of its proper divisors (301690450655).

999292561345 is a wasteful number, since it uses less digits than its factorization.

999292561345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178069.

The product of its digits is 47239200, while the sum is 64.

The spelling of 999292561345 in words is "nine hundred ninety-nine billion, two hundred ninety-two million, five hundred sixty-one thousand, three hundred forty-five".