32454221381 has 2 divisors, whose sum is σ = 32454221382. Its totient is φ = 32454221380.

The previous prime is 32454221357. The next prime is 32454221411. The reversal of 32454221381 is 18312245423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31198156900 + 1256064481 = 176630^2 + 35441^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32454221381 is a prime.

It is a super-2 number, since 2×32454221381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32454221311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16227110690 + 16227110691.

It is an arithmetic number, because the mean of its divisors is an integer number (16227110691).

Almost surely, 2^32454221381 is an apocalyptic number.

It is an amenable number.

32454221381 is a deficient number, since it is larger than the sum of its proper divisors (1).

32454221381 is an equidigital number, since it uses as much as digits as its factorization.

32454221381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 35.

The spelling of 32454221381 in words is "thirty-two billion, four hundred fifty-four million, two hundred twenty-one thousand, three hundred eighty-one".