88451766715489 has 4 divisors (see below), whose sum is σ = 89901795678100. Its totient is φ = 87001737752880.

The previous prime is 88451766715447. The next prime is 88451766715511. The reversal of 88451766715489 is 98451766715488.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12004146090000 + 76447620625489 = 3464700^2 + 8743433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88451766715489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88451766785489) 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, 725014481214 + ... + 725014481335.

It is an arithmetic number, because the mean of its divisors is an integer number (22475448919525).

Almost surely, 2^{88451766715489} is an apocalyptic number.

It is an amenable number.

88451766715489 is a deficient number, since it is larger than the sum of its proper divisors (1450028962611).

88451766715489 is a wasteful number, since it uses less digits than its factorization.

88451766715489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450028962610.

The product of its digits is 3251404800, while the sum is 79.

Subtracting 88451766715489 from its reverse (98451766715488), we obtain a palindrome (9999999999999).

The spelling of 88451766715489 in words is "eighty-eight trillion, four hundred fifty-one billion, seven hundred sixty-six million, seven hundred fifteen thousand, four hundred eighty-nine".