21476516332751 has 2 divisors, whose sum is σ = 21476516332752. Its totient is φ = 21476516332750.

The previous prime is 21476516332679. The next prime is 21476516332781. The reversal of 21476516332751 is 15723361567412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21476516332751 is a prime.

It is a super-2 number, since 2×21476516332751² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21476516332693 and 21476516332702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21476516332781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738258166375 + 10738258166376.

It is an arithmetic number, because the mean of its divisors is an integer number (10738258166376).

Almost surely, 2^{21476516332751} is an apocalyptic number.

21476516332751 is a deficient number, since it is larger than the sum of its proper divisors (1).

21476516332751 is an equidigital number, since it uses as much as digits as its factorization.

21476516332751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 53.

The spelling of 21476516332751 in words is "twenty-one trillion, four hundred seventy-six billion, five hundred sixteen million, three hundred thirty-two thousand, seven hundred fifty-one".