80897220000 has 360 divisors, whose sum is σ = 304393965876. Its totient is φ = 20302848000.

The previous prime is 80897219947. The next prime is 80897220067. The reversal of 80897220000 is 2279808.

It can be written as a sum of positive squares in 10 ways, for example, as 170772624 + 80726447376 = 13068^2 + 284124^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3046782 + ... + 3073218.

Almost surely, 2^80897220000 is an apocalyptic number.

80897220000 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 80897220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152196982938).

80897220000 is an abundant number, since it is smaller than the sum of its proper divisors (223496745876).

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

80897220000 is a wasteful number, since it uses less digits than its factorization.

80897220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26490 (or 26464 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

Adding to 80897220000 its reverse (2279808), we get a palindrome (80899499808).

The spelling of 80897220000 in words is "eighty billion, eight hundred ninety-seven million, two hundred twenty thousand".