89531631865 has 16 divisors (see below), whose sum is σ = 115952352768. Its totient is φ = 65972846016.

The previous prime is 89531631863. The next prime is 89531631913. The reversal of 89531631865 is 56813613598.

It is a cyclic number.

It is not a de Polignac number, because 89531631865 - 2¹ = 89531631863 is a prime.

It is a super-3 number, since 3×89531631865³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89531631863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1457389 + ... + 1517578.

It is an arithmetic number, because the mean of its divisors is an integer number (7247022048).

Almost surely, 2^89531631865 is an apocalyptic number.

It is an amenable number.

89531631865 is a deficient number, since it is larger than the sum of its proper divisors (26420720903).

89531631865 is a wasteful number, since it uses less digits than its factorization.

89531631865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975448.

The product of its digits is 4665600, while the sum is 55.

The spelling of 89531631865 in words is "eighty-nine billion, five hundred thirty-one million, six hundred thirty-one thousand, eight hundred sixty-five".