80781289279488 has 1248 divisors, whose sum is σ = 281928329819136. Its totient is φ = 22635956404224.

The previous prime is 80781289279429. The next prime is 80781289279489. The reversal of 80781289279488 is 88497298218708.

80781289279488 is a `hidden beast` number, since 8 + 0 + 7 + 8 + 128 + 9 + 2 + 7 + 9 + 488 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80781289279489) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 94260547156 + ... + 94260548012.

It is an arithmetic number, because the mean of its divisors is an integer number (225904110432).

Almost surely, 2^{80781289279488} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80781289279488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140964164909568).

80781289279488 is an abundant number, since it is smaller than the sum of its proper divisors (201147040539648).

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

80781289279488 is an equidigital number, since it uses as much as digits as its factorization.

80781289279488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 2080899072, while the sum is 81.

The spelling of 80781289279488 in words is "eighty trillion, seven hundred eighty-one billion, two hundred eighty-nine million, two hundred seventy-nine thousand, four hundred eighty-eight".