3992972166531 has 24 divisors (see below), whose sum is σ = 5928097207344. Its totient is φ = 2588029496640.

The previous prime is 3992972166479. The next prime is 3992972166553. The reversal of 3992972166531 is 1356612792993.

3992972166531 is a `hidden beast` number, since 3 + 9 + 9 + 2 + 97 + 2 + 1 + 6 + 6 + 531 = 666.

It is not a de Polignac number, because 3992972166531 - 2¹⁹ = 3992971642243 is a prime.

It is a super-2 number, since 2×3992972166531² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3992972166581) 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 23 ways as a sum of consecutive naturals, for example, 4214136 + ... + 5073941.

It is an arithmetic number, because the mean of its divisors is an integer number (247004050306).

Almost surely, 2^{3992972166531} is an apocalyptic number.

3992972166531 is a deficient number, since it is larger than the sum of its proper divisors (1935125040813).

3992972166531 is a wasteful number, since it uses less digits than its factorization.

3992972166531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9289411 (or 9289408 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 63.

The spelling of 3992972166531 in words is "three trillion, nine hundred ninety-two billion, nine hundred seventy-two million, one hundred sixty-six thousand, five hundred thirty-one".