80851229030781 has 24 divisors (see below), whose sum is σ = 131658567022080. Its totient is φ = 49000744865160.

The previous prime is 80851229030777. The next prime is 80851229030833. The reversal of 80851229030781 is 18703092215808.

80851229030781 is a `hidden beast` number, since 8 + 0 + 8 + 512 + 2 + 90 + 30 + 7 + 8 + 1 = 666.

It is not a de Polignac number, because 80851229030781 - 2² = 80851229030777 is a prime.

It is a super-2 number, since 2×80851229030781² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80851229030701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12373922205 + ... + 12373928738.

It is an arithmetic number, because the mean of its divisors is an integer number (5485773625920).

Almost surely, 2^{80851229030781} is an apocalyptic number.

It is an amenable number.

80851229030781 is a deficient number, since it is larger than the sum of its proper divisors (50807337991299).

80851229030781 is a wasteful number, since it uses less digits than its factorization.

80851229030781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24747850974 (or 24747850957 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 80851229030781 in words is "eighty trillion, eight hundred fifty-one billion, two hundred twenty-nine million, thirty thousand, seven hundred eighty-one".