81488126001 has 4 divisors (see below), whose sum is σ = 108650834672. Its totient is φ = 54325417332.

The previous prime is 81488125987. The next prime is 81488126017. The reversal of 81488126001 is 10062188418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 81488126001 - 2²¹ = 81486028849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81488126051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13581354331 + ... + 13581354336.

It is an arithmetic number, because the mean of its divisors is an integer number (27162708668).

Almost surely, 2^81488126001 is an apocalyptic number.

It is an amenable number.

81488126001 is a deficient number, since it is larger than the sum of its proper divisors (27162708671).

81488126001 is a wasteful number, since it uses less digits than its factorization.

81488126001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27162708670.

The product of its (nonzero) digits is 24576, while the sum is 39.

The spelling of 81488126001 in words is "eighty-one billion, four hundred eighty-eight million, one hundred twenty-six thousand, one".