88809899991 has 8 divisors (see below), whose sum is σ = 118447056000. Its totient is φ = 59189671992.

The previous prime is 88809899987. The next prime is 88809899993. The reversal of 88809899991 is 19999890888.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 88809899991 - 2² = 88809899987 is a prime.

It is a super-2 number, since 2×88809899991² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88809899993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4219755 + ... + 4240748.

It is an arithmetic number, because the mean of its divisors is an integer number (14805882000).

Almost surely, 2^88809899991 is an apocalyptic number.

88809899991 is a deficient number, since it is larger than the sum of its proper divisors (29637156009).

88809899991 is a wasteful number, since it uses less digits than its factorization.

88809899991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464005.

The product of its (nonzero) digits is 241864704, while the sum is 78.

The spelling of 88809899991 in words is "eighty-eight billion, eight hundred nine million, eight hundred ninety-nine thousand, nine hundred ninety-one".