66462028019 has 2 divisors, whose sum is σ = 66462028020. Its totient is φ = 66462028018.

The previous prime is 66462027953. The next prime is 66462028027. The reversal of 66462028019 is 91082026466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66462028019 is a prime.

It is a super-2 number, since 2×66462028019² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (66462028069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33231014009 + 33231014010.

It is an arithmetic number, because the mean of its divisors is an integer number (33231014010).

Almost surely, 2^66462028019 is an apocalyptic number.

66462028019 is a deficient number, since it is larger than the sum of its proper divisors (1).

66462028019 is an equidigital number, since it uses as much as digits as its factorization.

66462028019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 66462028019 in words is "sixty-six billion, four hundred sixty-two million, twenty-eight thousand, nineteen".