32421310261 has 2 divisors, whose sum is σ = 32421310262. Its totient is φ = 32421310260.

The previous prime is 32421310253. The next prime is 32421310267. The reversal of 32421310261 is 16201312423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30104332036 + 2316978225 = 173506^2 + 48135^2 .

It is an emirp because it is prime and its reverse (16201312423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32421310261 - 2³ = 32421310253 is a prime.

It is a super-2 number, since 2×32421310261² (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 (32421310267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16210655130 + 16210655131.

It is an arithmetic number, because the mean of its divisors is an integer number (16210655131).

Almost surely, 2^32421310261 is an apocalyptic number.

It is an amenable number.

32421310261 is a deficient number, since it is larger than the sum of its proper divisors (1).

32421310261 is an equidigital number, since it uses as much as digits as its factorization.

32421310261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 32421310261 its reverse (16201312423), we get a palindrome (48622622684).

The spelling of 32421310261 in words is "thirty-two billion, four hundred twenty-one million, three hundred ten thousand, two hundred sixty-one".