79801811 has 2 divisors, whose sum is σ = 79801812. Its totient is φ = 79801810.

The previous prime is 79801793. The next prime is 79801829. The reversal of 79801811 is 11810897.

It is a balanced prime because it is at equal distance from previous prime (79801793) and next prime (79801829).

It is a cyclic number.

It is not a de Polignac number, because 79801811 - 2²² = 75607507 is a prime.

It is not a weakly prime, because it can be changed into another prime (79801511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39900905 + 39900906.

It is an arithmetic number, because the mean of its divisors is an integer number (39900906).

Almost surely, 2^79801811 is an apocalyptic number.

79801811 is a deficient number, since it is larger than the sum of its proper divisors (1).

79801811 is an equidigital number, since it uses as much as digits as its factorization.

79801811 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 35.

The square root of 79801811 is about 8933.1859378388. The cubic root of 79801811 is about 430.5308227214.

The spelling of 79801811 in words is "seventy-nine million, eight hundred one thousand, eight hundred eleven".