1072005399809 has 2 divisors, whose sum is σ = 1072005399810. Its totient is φ = 1072005399808.

The previous prime is 1072005399767. The next prime is 1072005399833. The reversal of 1072005399809 is 9089935002701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1057195240000 + 14810159809 = 1028200^2 + 121697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1072005399809 is a prime.

It is a super-2 number, since 2×1072005399809² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1072005390809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536002699904 + 536002699905.

It is an arithmetic number, because the mean of its divisors is an integer number (536002699905).

Almost surely, 2^{1072005399809} is an apocalyptic number.

It is an amenable number.

1072005399809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1072005399809 is an equidigital number, since it uses as much as digits as its factorization.

1072005399809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 1072005399809 in words is "one trillion, seventy-two billion, five million, three hundred ninety-nine thousand, eight hundred nine".