81077000611 has 2 divisors, whose sum is σ = 81077000612. Its totient is φ = 81077000610.

The previous prime is 81077000527. The next prime is 81077000623. The reversal of 81077000611 is 11600077018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81077000611 - 2⁹ = 81077000099 is a prime.

It is not a weakly prime, because it can be changed into another prime (81077000671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40538500305 + 40538500306.

It is an arithmetic number, because the mean of its divisors is an integer number (40538500306).

Almost surely, 2^81077000611 is an apocalyptic number.

81077000611 is a deficient number, since it is larger than the sum of its proper divisors (1).

81077000611 is an equidigital number, since it uses as much as digits as its factorization.

81077000611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 31.

Adding to 81077000611 its reverse (11600077018), we get a palindrome (92677077629).

The spelling of 81077000611 in words is "eighty-one billion, seventy-seven million, six hundred eleven", and thus it is an aban number.