21476570661433 has 2 divisors, whose sum is σ = 21476570661434. Its totient is φ = 21476570661432.

The previous prime is 21476570661421. The next prime is 21476570661443. The reversal of 21476570661433 is 33416607567412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21445123668544 + 31446992889 = 4630888^2 + 177333^2 .

It is a cyclic number.

It is not a de Polignac number, because 21476570661433 - 2⁵ = 21476570661401 is a prime.

It is a super-2 number, since 2×21476570661433² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21476570661443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738285330716 + 10738285330717.

It is an arithmetic number, because the mean of its divisors is an integer number (10738285330717).

Almost surely, 2^{21476570661433} is an apocalyptic number.

It is an amenable number.

21476570661433 is a deficient number, since it is larger than the sum of its proper divisors (1).

21476570661433 is an equidigital number, since it uses as much as digits as its factorization.

21476570661433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 21476570661433 in words is "twenty-one trillion, four hundred seventy-six billion, five hundred seventy million, six hundred sixty-one thousand, four hundred thirty-three".