89778792222720 has 624 divisors, whose sum is σ = 313205816523600. Its totient is φ = 23786680221696.

The previous prime is 89778792222689. The next prime is 89778792222811. The reversal of 89778792222720 is 2722229787798.

It can be written as a sum of positive squares in 8 ways, for example, as 8654328446976 + 81124463775744 = 2941824^2 + 9006912^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38090279782 + ... + 38090282138.

It is an arithmetic number, because the mean of its divisors is an integer number (501932398275).

Almost surely, 2^{89778792222720} is an apocalyptic number.

89778792222720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89778792222720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156602908261800).

89778792222720 is an abundant number, since it is smaller than the sum of its proper divisors (223427024300880).

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

89778792222720 is a wasteful number, since it uses less digits than its factorization.

89778792222720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638 (or 3613 counting only the distinct ones).

The product of its (nonzero) digits is 398297088, while the sum is 72.

The spelling of 89778792222720 in words is "eighty-nine trillion, seven hundred seventy-eight billion, seven hundred ninety-two million, two hundred twenty-two thousand, seven hundred twenty".