32171480477 has 2 divisors, whose sum is σ = 32171480478. Its totient is φ = 32171480476.

The previous prime is 32171480441. The next prime is 32171480519. The reversal of 32171480477 is 77408417123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27359144836 + 4812335641 = 165406^2 + 69371^2 .

It is a cyclic number.

It is not a de Polignac number, because 32171480477 - 2⁶ = 32171480413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32171480377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16085740238 + 16085740239.

It is an arithmetic number, because the mean of its divisors is an integer number (16085740239).

Almost surely, 2^32171480477 is an apocalyptic number.

It is an amenable number.

32171480477 is a deficient number, since it is larger than the sum of its proper divisors (1).

32171480477 is an equidigital number, since it uses as much as digits as its factorization.

32171480477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 263424, while the sum is 44.

The spelling of 32171480477 in words is "thirty-two billion, one hundred seventy-one million, four hundred eighty thousand, four hundred seventy-seven".