5972643981 has 12 divisors (see below), whose sum is σ = 8628161152. Its totient is φ = 3981297096.

The previous prime is 5972643959. The next prime is 5972643997. The reversal of 5972643981 is 1893462795.

5972643981 is a `hidden beast` number, since 597 + 2 + 6 + 43 + 9 + 8 + 1 = 666.

It is not a de Polignac number, because 5972643981 - 2¹⁰ = 5972642957 is a prime.

It is a super-2 number, since 2×5972643981² = 71344952247551056722, which 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 (5972641981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54180 + ... + 121986.

Almost surely, 2^5972643981 is an apocalyptic number.

It is an amenable number.

5972643981 is a deficient number, since it is larger than the sum of its proper divisors (2655517171).

5972643981 is a wasteful number, since it uses less digits than its factorization.

5972643981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77600 (or 77597 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 5972643981 is about 77282.8828460740. The cubic root of 5972643981 is about 1814.3547637004.

The spelling of 5972643981 in words is "five billion, nine hundred seventy-two million, six hundred forty-three thousand, nine hundred eighty-one".