66887822453 has 2 divisors, whose sum is σ = 66887822454. Its totient is φ = 66887822452.

The previous prime is 66887822411. The next prime is 66887822479. The reversal of 66887822453 is 35422878866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66808291729 + 79530724 = 258473^2 + 8918^2 .

It is a cyclic number.

It is not a de Polignac number, because 66887822453 - 2⁶ = 66887822389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66887822392 and 66887822401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66887828453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33443911226 + 33443911227.

It is an arithmetic number, because the mean of its divisors is an integer number (33443911227).

Almost surely, 2^66887822453 is an apocalyptic number.

It is an amenable number.

66887822453 is a deficient number, since it is larger than the sum of its proper divisors (1).

66887822453 is an equidigital number, since it uses as much as digits as its factorization.

66887822453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30965760, while the sum is 59.

The spelling of 66887822453 in words is "sixty-six billion, eight hundred eighty-seven million, eight hundred twenty-two thousand, four hundred fifty-three".