81488127 has 24 divisors (see below), whose sum is σ = 126770736. Its totient is φ = 46424448.

The previous prime is 81488117. The next prime is 81488159. The reversal of 81488127 is 72188418.

It is a happy number.

It is not a de Polignac number, because 81488127 - 2⁴ = 81488111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81488117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66573 + ... + 67785.

It is an arithmetic number, because the mean of its divisors is an integer number (5282114).

Almost surely, 2^81488127 is an apocalyptic number.

81488127 is a deficient number, since it is larger than the sum of its proper divisors (45282609).

81488127 is a wasteful number, since it uses less digits than its factorization.

81488127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687 (or 1680 counting only the distinct ones).

The product of its digits is 28672, while the sum is 39.

The square root of 81488127 is about 9027.0774340315. The cubic root of 81488127 is about 433.5422680150.

The spelling of 81488127 in words is "eighty-one million, four hundred eighty-eight thousand, one hundred twenty-seven".