1565232235201 has 2 divisors, whose sum is σ = 1565232235202. Its totient is φ = 1565232235200.

The previous prime is 1565232235141. The next prime is 1565232235207. The reversal of 1565232235201 is 1025322325651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1089685454400 + 475546780801 = 1043880^2 + 689599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1565232235201 - 2²⁹ = 1564695364289 is a prime.

It is a super-2 number, since 2×1565232235201² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1565232235207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782616117600 + 782616117601.

It is an arithmetic number, because the mean of its divisors is an integer number (782616117601).

Almost surely, 2^{1565232235201} is an apocalyptic number.

It is an amenable number.

1565232235201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1565232235201 is an equidigital number, since it uses as much as digits as its factorization.

1565232235201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 1565232235201 in words is "one trillion, five hundred sixty-five billion, two hundred thirty-two million, two hundred thirty-five thousand, two hundred one".