80521754894 has 36 divisors (see below), whose sum is σ = 139136209992. Its totient is φ = 34236758160.

The previous prime is 80521754867. The next prime is 80521754897. The reversal of 80521754894 is 49845712508.

It is a super-2 number, since 2×80521754894² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80521754897) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 192175817 + ... + 192176235.

It is an arithmetic number, because the mean of its divisors is an integer number (3864894722).

Almost surely, 2^80521754894 is an apocalyptic number.

80521754894 is a deficient number, since it is larger than the sum of its proper divisors (58614455098).

80521754894 is an frugal number, since it uses more digits than its factorization.

80521754894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 80521754894 in words is "eighty billion, five hundred twenty-one million, seven hundred fifty-four thousand, eight hundred ninety-four".