89681688985 has 8 divisors (see below), whose sum is σ = 122992030656. Its totient is φ = 61496015280.

The previous prime is 89681688961. The next prime is 89681688997. The reversal of 89681688985 is 58988618698.

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

It is not a de Polignac number, because 89681688985 - 2¹³ = 89681680793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281166951 + ... + 1281167020.

It is an arithmetic number, because the mean of its divisors is an integer number (15374003832).

Almost surely, 2^89681688985 is an apocalyptic number.

It is an amenable number.

89681688985 is a deficient number, since it is larger than the sum of its proper divisors (33310341671).

89681688985 is a wasteful number, since it uses less digits than its factorization.

89681688985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562333983.

The product of its digits is 477757440, while the sum is 76.

The spelling of 89681688985 in words is "eighty-nine billion, six hundred eighty-one million, six hundred eighty-eight thousand, nine hundred eighty-five".