80891355798 has 48 divisors (see below), whose sum is σ = 191282931216. Its totient is φ = 24501611520.

The previous prime is 80891355773. The next prime is 80891355863. The reversal of 80891355798 is 89755319808.

It is a super-2 number, since 2×80891355798² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360186 + ... + 539922.

It is an arithmetic number, because the mean of its divisors is an integer number (3985061067).

Almost surely, 2^80891355798 is an apocalyptic number.

80891355798 is an abundant number, since it is smaller than the sum of its proper divisors (110391575418).

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

80891355798 is a wasteful number, since it uses less digits than its factorization.

80891355798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182029 (or 182026 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 63.

The spelling of 80891355798 in words is "eighty billion, eight hundred ninety-one million, three hundred fifty-five thousand, seven hundred ninety-eight".