1223795700009 has 45 divisors (see below), whose sum is σ = 1847937291541. Its totient is φ = 807122188800.

The previous prime is 1223795700007. The next prime is 1223795700143. The reversal of 1223795700009 is 9000075973221.

The square root of 1223795700009 is 1106253.

It is a perfect power (a square), and thus also a powerful number.

1223795700009 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 79 + 570 + 0 + 0 + 0 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 202135664025 + 1021660035984 = 449595^2 + 1010772^2 .

It is not a de Polignac number, because 1223795700009 - 2¹ = 1223795700007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223795700007) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1005583369 + ... + 1005584585.

Almost surely, 2^{1223795700009} is an apocalyptic number.

1223795700009 is the 1106253-rd square number.

1223795700009 is the 553127-th centered octagonal number.

It is an amenable number.

1223795700009 is a deficient number, since it is larger than the sum of its proper divisors (624141591532).

1223795700009 is an frugal number, since it uses more digits than its factorization.

1223795700009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 1223795700009 in words is "one trillion, two hundred twenty-three billion, seven hundred ninety-five million, seven hundred thousand, nine".