89147896721842 has 12 divisors (see below), whose sum is σ = 155553983055630. Its totient is φ = 38206241452176.

The previous prime is 89147896721773. The next prime is 89147896721869. The reversal of 89147896721842 is 24812769874198.

It can be written as a sum of positive squares in only one way, i.e., 89124380806041 + 23515915801 = 9440571^2 + 153349^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 454836207667 + ... + 454836207862.

Almost surely, 2^{89147896721842} is an apocalyptic number.

89147896721842 is a deficient number, since it is larger than the sum of its proper divisors (66406086333788).

89147896721842 is a wasteful number, since it uses less digits than its factorization.

89147896721842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909672415545 (or 909672415538 counting only the distinct ones).

The product of its digits is 780337152, while the sum is 76.

The spelling of 89147896721842 in words is "eighty-nine trillion, one hundred forty-seven billion, eight hundred ninety-six million, seven hundred twenty-one thousand, eight hundred forty-two".