215432359047461 has 2 divisors, whose sum is σ = 215432359047462. Its totient is φ = 215432359047460.

The previous prime is 215432359047457. The next prime is 215432359047463. The reversal of 215432359047461 is 164740953234512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199563935424100 + 15868423623361 = 14126710^2 + 3983519^2 .

It is a cyclic number.

It is not a de Polignac number, because 215432359047461 - 2² = 215432359047457 is a prime.

It is a super-2 number, since 2×215432359047461² (a number of 29 digits) contains 22 as substring.

Together with 215432359047463, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 215432359047397 and 215432359047406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215432359047463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107716179523730 + 107716179523731.

It is an arithmetic number, because the mean of its divisors is an integer number (107716179523731).

Almost surely, 2^{215432359047461} is an apocalyptic number.

It is an amenable number.

215432359047461 is a deficient number, since it is larger than the sum of its proper divisors (1).

215432359047461 is an equidigital number, since it uses as much as digits as its factorization.

215432359047461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 215432359047461 in words is "two hundred fifteen trillion, four hundred thirty-two billion, three hundred fifty-nine million, forty-seven thousand, four hundred sixty-one".