80245873944981 has 6 divisors (see below), whose sum is σ = 115910706809430. Its totient is φ = 53497249296648.

The previous prime is 80245873944947. The next prime is 80245873944991. The reversal of 80245873944981 is 18944937854208.

It is a happy number.

80245873944981 is a `hidden beast` number, since 8 + 0 + 2 + 4 + 587 + 39 + 4 + 4 + 9 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 76392249750756 + 3853624194225 = 8740266^2 + 1963065^2 .

It is not a de Polignac number, because 80245873944981 - 2¹⁰ = 80245873943957 is a prime.

It is a super-2 number, since 2×80245873944981² (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 (80245873944991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4458104108046 + ... + 4458104108063.

It is an arithmetic number, because the mean of its divisors is an integer number (19318451134905).

Almost surely, 2^{80245873944981} is an apocalyptic number.

It is an amenable number.

80245873944981 is a deficient number, since it is larger than the sum of its proper divisors (35664832864449).

80245873944981 is a wasteful number, since it uses less digits than its factorization.

80245873944981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916208216115 (or 8916208216112 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 72.

The spelling of 80245873944981 in words is "eighty trillion, two hundred forty-five billion, eight hundred seventy-three million, nine hundred forty-four thousand, nine hundred eighty-one".