320487269693 has 2 divisors, whose sum is σ = 320487269694. Its totient is φ = 320487269692.

The previous prime is 320487269671. The next prime is 320487269789. The reversal of 320487269693 is 396962784023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288967528249 + 31519741444 = 537557^2 + 177538^2 .

It is a cyclic number.

It is not a de Polignac number, because 320487269693 - 2⁶ = 320487269629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320487269653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160243634846 + 160243634847.

It is an arithmetic number, because the mean of its divisors is an integer number (160243634847).

Almost surely, 2^320487269693 is an apocalyptic number.

It is an amenable number.

320487269693 is a deficient number, since it is larger than the sum of its proper divisors (1).

320487269693 is an equidigital number, since it uses as much as digits as its factorization.

320487269693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 59.

The spelling of 320487269693 in words is "three hundred twenty billion, four hundred eighty-seven million, two hundred sixty-nine thousand, six hundred ninety-three".