88812439991 has 16 divisors (see below), whose sum is σ = 98236186368. Its totient is φ = 79614187200.

The previous prime is 88812439981. The next prime is 88812440039. The reversal of 88812439991 is 19993421888.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88812439991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88812439981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4428176 + ... + 4448186.

It is an arithmetic number, because the mean of its divisors is an integer number (6139761648).

Almost surely, 2^88812439991 is an apocalyptic number.

88812439991 is a deficient number, since it is larger than the sum of its proper divisors (9423746377).

88812439991 is a wasteful number, since it uses less digits than its factorization.

88812439991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25622.

The product of its digits is 8957952, while the sum is 62.

The spelling of 88812439991 in words is "eighty-eight billion, eight hundred twelve million, four hundred thirty-nine thousand, nine hundred ninety-one".