72428883773 has 2 divisors, whose sum is σ = 72428883774. Its totient is φ = 72428883772.

The previous prime is 72428883739. The next prime is 72428883881. The reversal of 72428883773 is 37738882427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71972548729 + 456335044 = 268277^2 + 21362^2 .

It is a cyclic number.

It is not a de Polignac number, because 72428883773 - 2¹⁶ = 72428818237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72928883773) 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, 36214441886 + 36214441887.

It is an arithmetic number, because the mean of its divisors is an integer number (36214441887).

Almost surely, 2^72428883773 is an apocalyptic number.

It is an amenable number.

72428883773 is a deficient number, since it is larger than the sum of its proper divisors (1).

72428883773 is an equidigital number, since it uses as much as digits as its factorization.

72428883773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25288704, while the sum is 59.

The spelling of 72428883773 in words is "seventy-two billion, four hundred twenty-eight million, eight hundred eighty-three thousand, seven hundred seventy-three".