89782138215 has 96 divisors (see below), whose sum is σ = 197982720000. Its totient is φ = 37311986880.

The previous prime is 89782138211. The next prime is 89782138219. The reversal of 89782138215 is 51283128798.

It is an interprime number because it is at equal distance from previous prime (89782138211) and next prime (89782138219).

It is not a de Polignac number, because 89782138215 - 2² = 89782138211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89782138211) 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 95 ways as a sum of consecutive naturals, for example, 94615 + ... + 434184.

It is an arithmetic number, because the mean of its divisors is an integer number (2062320000).

Almost surely, 2^89782138215 is an apocalyptic number.

89782138215 is an abundant number, since it is smaller than the sum of its proper divisors (108200581785).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89782138215 is a wasteful number, since it uses less digits than its factorization.

89782138215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528842 (or 528825 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 89782138215 in words is "eighty-nine billion, seven hundred eighty-two million, one hundred thirty-eight thousand, two hundred fifteen".