89771231970 has 192 divisors, whose sum is σ = 269304961536. Its totient is φ = 20323353600.

The previous prime is 89771231941. The next prime is 89771231971. The reversal of 89771231970 is 7913217798.

It is not an unprimeable number, because it can be changed into a prime (89771231971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37765422 + ... + 37767798.

It is an arithmetic number, because the mean of its divisors is an integer number (1402630008).

Almost surely, 2^89771231970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89771231970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134652480768).

89771231970 is an abundant number, since it is smaller than the sum of its proper divisors (179533729566).

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

89771231970 is a wasteful number, since it uses less digits than its factorization.

89771231970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The spelling of 89771231970 in words is "eighty-nine billion, seven hundred seventy-one million, two hundred thirty-one thousand, nine hundred seventy".