81074011 has 6 divisors (see below), whose sum is σ = 84752780. Its totient is φ = 77548548.

The previous prime is 81073973. The next prime is 81074017. The reversal of 81074011 is 11047018.

It is not a de Polignac number, because 81074011 - 2¹³ = 81065819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81074017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76101 + ... + 77158.

Almost surely, 2^81074011 is an apocalyptic number.

81074011 is a deficient number, since it is larger than the sum of its proper divisors (3678769).

81074011 is a wasteful number, since it uses less digits than its factorization.

81074011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153305 (or 153282 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 81074011 is about 9004.1107834144. The cubic root of 81074011 is about 432.8066116338.

The spelling of 81074011 in words is "eighty-one million, seventy-four thousand, eleven".