80780033 has 2 divisors, whose sum is σ = 80780034. Its totient is φ = 80780032.

The previous prime is 80780023. The next prime is 80780053. The reversal of 80780033 is 33008708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73068304 + 7711729 = 8548^2 + 2777^2 .

It is a cyclic number.

It is not a de Polignac number, because 80780033 - 2⁶ = 80779969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80779978 and 80780005.

It is not a weakly prime, because it can be changed into another prime (80780023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40390016 + 40390017.

It is an arithmetic number, because the mean of its divisors is an integer number (40390017).

Almost surely, 2^80780033 is an apocalyptic number.

It is an amenable number.

80780033 is a deficient number, since it is larger than the sum of its proper divisors (1).

80780033 is an equidigital number, since it uses as much as digits as its factorization.

80780033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 80780033 is about 8987.7713032765. The cubic root of 80780033 is about 432.2828526700.

The spelling of 80780033 in words is "eighty million, seven hundred eighty thousand, thirty-three".