80821371050 has 24 divisors (see below), whose sum is σ = 171803143776. Its totient is φ = 27710184240.

The previous prime is 80821370977. The next prime is 80821371053. The reversal of 80821371050 is 5017312808.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80821371050.

It is not an unprimeable number, because it can be changed into a prime (80821371053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115458752 + ... + 115459451.

It is an arithmetic number, because the mean of its divisors is an integer number (7158464324).

Almost surely, 2^80821371050 is an apocalyptic number.

80821371050 is an abundant number, since it is smaller than the sum of its proper divisors (90981772726).

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

80821371050 is a wasteful number, since it uses less digits than its factorization.

80821371050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230918222 (or 230918217 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

Adding to 80821371050 its reverse (5017312808), we get a palindrome (85838683858).

The spelling of 80821371050 in words is "eighty billion, eight hundred twenty-one million, three hundred seventy-one thousand, fifty".