81026127 has 96 divisors (see below), whose sum is σ = 156549120. Its totient is φ = 39191040.

The previous prime is 81026059. The next prime is 81026129. The reversal of 81026127 is 72162018.

It is not a de Polignac number, because 81026127 - 2⁷ = 81025999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81026127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81026129) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 637938 + ... + 638064.

It is an arithmetic number, because the mean of its divisors is an integer number (1630720).

Almost surely, 2^81026127 is an apocalyptic number.

81026127 is a deficient number, since it is larger than the sum of its proper divisors (75522993).

81026127 is a wasteful number, since it uses less digits than its factorization.

81026127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 81026127 is about 9001.4513829715. The cubic root of 81026127 is about 432.7213866524.

The spelling of 81026127 in words is "eighty-one million, twenty-six thousand, one hundred twenty-seven".