89781627812 has 12 divisors (see below), whose sum is σ = 157513614300. Its totient is φ = 44777738016.

The previous prime is 89781627811. The next prime is 89781627863. The reversal of 89781627812 is 21872618798.

It can be written as a sum of positive squares in 2 ways, for example, as 57127692196 + 32653935616 = 239014^2 + 180704^2 .

It is not an unprimeable number, because it can be changed into a prime (89781627811) 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, 28267187 + ... + 28270362.

It is an arithmetic number, because the mean of its divisors is an integer number (13126134525).

Almost surely, 2^89781627812 is an apocalyptic number.

It is an amenable number.

89781627812 is a deficient number, since it is larger than the sum of its proper divisors (67731986488).

89781627812 is a wasteful number, since it uses less digits than its factorization.

89781627812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56537950 (or 56537948 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 59.

The spelling of 89781627812 in words is "eighty-nine billion, seven hundred eighty-one million, six hundred twenty-seven thousand, eight hundred twelve".