8043056981 has 4 divisors (see below), whose sum is σ = 8302510464. Its totient is φ = 7783603500.

The previous prime is 8043056951. The next prime is 8043057023. The reversal of 8043056981 is 1896503408.

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 8043056981 - 2¹⁰ = 8043055957 is a prime.

It is a super-2 number, since 2×8043056981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8043056951) 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, 129726695 + ... + 129726756.

It is an arithmetic number, because the mean of its divisors is an integer number (2075627616).

Almost surely, 2^8043056981 is an apocalyptic number.

It is an amenable number.

8043056981 is a deficient number, since it is larger than the sum of its proper divisors (259453483).

8043056981 is a wasteful number, since it uses less digits than its factorization.

8043056981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259453482.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 8043056981 is about 89683.0919460296. The cubic root of 8043056981 is about 2003.5816637635.

The spelling of 8043056981 in words is "eight billion, forty-three million, fifty-six thousand, nine hundred eighty-one".