80503811 has 2 divisors, whose sum is σ = 80503812. Its totient is φ = 80503810.

The previous prime is 80503781. The next prime is 80503837. The reversal of 80503811 is 11830508.

It is an a-pointer prime, because the next prime (80503837) can be obtained adding 80503811 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80503811 - 2⁶ = 80503747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80503861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40251905 + 40251906.

It is an arithmetic number, because the mean of its divisors is an integer number (40251906).

Almost surely, 2^80503811 is an apocalyptic number.

80503811 is a deficient number, since it is larger than the sum of its proper divisors (1).

80503811 is an equidigital number, since it uses as much as digits as its factorization.

80503811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 80503811 is about 8972.3915986765. The cubic root of 80503811 is about 431.7895690817.

The spelling of 80503811 in words is "eighty million, five hundred three thousand, eight hundred eleven".