88144781144821 has 4 divisors (see below), whose sum is σ = 88216385354944. Its totient is φ = 88073176934700.

The previous prime is 88144781144701. The next prime is 88144781144851. The reversal of 88144781144821 is 12844118744188.

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 a cyclic number.

It is not a de Polignac number, because 88144781144821 - 2²¹ = 88144779047669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88144781144821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88144781144851) 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, 35802103215 + ... + 35802105676.

It is an arithmetic number, because the mean of its divisors is an integer number (22054096338736).

Almost surely, 2^{88144781144821} is an apocalyptic number.

It is an amenable number.

88144781144821 is a deficient number, since it is larger than the sum of its proper divisors (71604210123).

88144781144821 is a wasteful number, since it uses less digits than its factorization.

88144781144821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71604210122.

The product of its digits is 14680064, while the sum is 61.

The spelling of 88144781144821 in words is "eighty-eight trillion, one hundred forty-four billion, seven hundred eighty-one million, one hundred forty-four thousand, eight hundred twenty-one".