81411741711 has 40 divisors (see below), whose sum is σ = 130951553040. Its totient is φ = 50216032512.

The previous prime is 81411741707. The next prime is 81411741713. The reversal of 81411741711 is 11714711418.

81411741711 is a `hidden beast` number, since 8 + 1 + 411 + 74 + 171 + 1 = 666.

It is not a de Polignac number, because 81411741711 - 2² = 81411741707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81411741713) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 419796 + ... + 582281.

It is an arithmetic number, because the mean of its divisors is an integer number (3273788826).

Almost surely, 2^81411741711 is an apocalyptic number.

81411741711 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

81411741711 is a deficient number, since it is larger than the sum of its proper divisors (49539811329).

81411741711 is a wasteful number, since it uses less digits than its factorization.

81411741711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002165 (or 1002156 counting only the distinct ones).

The product of its digits is 6272, while the sum is 36.

The spelling of 81411741711 in words is "eighty-one billion, four hundred eleven million, seven hundred forty-one thousand, seven hundred eleven".