16531941393 has 12 divisors (see below), whose sum is σ = 26050332048. Its totient is φ = 10019358360.

The previous prime is 16531941373. The next prime is 16531941407. The reversal of 16531941393 is 39314913561.

16531941393 is a `hidden beast` number, since 16 + 531 + 9 + 4 + 13 + 93 = 666.

It is not a de Polignac number, because 16531941393 - 2³³ = 7942006801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16531941323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83494555 + ... + 83494752.

It is an arithmetic number, because the mean of its divisors is an integer number (2170861004).

Almost surely, 2^16531941393 is an apocalyptic number.

It is an amenable number.

16531941393 is a deficient number, since it is larger than the sum of its proper divisors (9518390655).

16531941393 is a wasteful number, since it uses less digits than its factorization.

16531941393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166989324 (or 166989321 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The spelling of 16531941393 in words is "sixteen billion, five hundred thirty-one million, nine hundred forty-one thousand, three hundred ninety-three".