7423066981 has 12 divisors (see below), whose sum is σ = 8163331456. Its totient is φ = 6744858120.

The previous prime is 7423066979. The next prime is 7423066999. The reversal of 7423066981 is 1896603247.

It is not a de Polignac number, because 7423066981 - 2¹ = 7423066979 is a prime.

It is a super-2 number, since 2×7423066981² (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 (7423066481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244990 + ... + 273616.

Almost surely, 2^7423066981 is an apocalyptic number.

It is an amenable number.

7423066981 is a deficient number, since it is larger than the sum of its proper divisors (740264475).

7423066981 is a wasteful number, since it uses less digits than its factorization.

7423066981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30792 (or 30781 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 7423066981 is about 86157.2224540694. Note that the first 3 decimals coincide. The cubic root of 7423066981 is about 1950.7178580764.

The spelling of 7423066981 in words is "seven billion, four hundred twenty-three million, sixty-six thousand, nine hundred eighty-one".