80736811 has 2 divisors, whose sum is σ = 80736812. Its totient is φ = 80736810.

The previous prime is 80736797. The next prime is 80736823. The reversal of 80736811 is 11863708.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80736811 is a prime.

It is equal to p_4709860 and since 80736811 and 4709860 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (80736881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40368405 + 40368406.

It is an arithmetic number, because the mean of its divisors is an integer number (40368406).

Almost surely, 2^80736811 is an apocalyptic number.

80736811 is a deficient number, since it is larger than the sum of its proper divisors (1).

80736811 is an equidigital number, since it uses as much as digits as its factorization.

80736811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 80736811 is about 8985.3664922473. The cubic root of 80736811 is about 432.2057401208.

It can be divided in two parts, 8073 and 6811, that added together give a square (14884 = 122²).

The spelling of 80736811 in words is "eighty million, seven hundred thirty-six thousand, eight hundred eleven".