80971143870481 has 4 divisors (see below), whose sum is σ = 80981655515712. Its totient is φ = 80960632225252.

The previous prime is 80971143870443. The next prime is 80971143870503. The reversal of 80971143870481 is 18407834117908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80971143870481 - 2¹³ = 80971143862289 is a prime.

It is a super-2 number, since 2×80971143870481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80971143870431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5255811061 + ... + 5255826466.

It is an arithmetic number, because the mean of its divisors is an integer number (20245413878928).

Almost surely, 2^{80971143870481} is an apocalyptic number.

It is an amenable number.

80971143870481 is a deficient number, since it is larger than the sum of its proper divisors (10511645231).

80971143870481 is a wasteful number, since it uses less digits than its factorization.

80971143870481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511645230.

The product of its (nonzero) digits is 10838016, while the sum is 61.

The spelling of 80971143870481 in words is "eighty trillion, nine hundred seventy-one billion, one hundred forty-three million, eight hundred seventy thousand, four hundred eighty-one".