32161393447 has 2 divisors, whose sum is σ = 32161393448. Its totient is φ = 32161393446.

The previous prime is 32161393391. The next prime is 32161393463. The reversal of 32161393447 is 74439316123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32161393447 - 2¹¹ = 32161391399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32161393477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080696723 + 16080696724.

It is an arithmetic number, because the mean of its divisors is an integer number (16080696724).

Almost surely, 2^32161393447 is an apocalyptic number.

32161393447 is a deficient number, since it is larger than the sum of its proper divisors (1).

32161393447 is an equidigital number, since it uses as much as digits as its factorization.

32161393447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The spelling of 32161393447 in words is "thirty-two billion, one hundred sixty-one million, three hundred ninety-three thousand, four hundred forty-seven".