66002113031 has 2 divisors, whose sum is σ = 66002113032. Its totient is φ = 66002113030.

The previous prime is 66002113027. The next prime is 66002113043. The reversal of 66002113031 is 13031120066.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66002113031 - 2² = 66002113027 is a prime.

It is a super-2 number, since 2×66002113031² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 66002112988 and 66002113006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66002113081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33001056515 + 33001056516.

It is an arithmetic number, because the mean of its divisors is an integer number (33001056516).

Almost surely, 2^66002113031 is an apocalyptic number.

66002113031 is a deficient number, since it is larger than the sum of its proper divisors (1).

66002113031 is an equidigital number, since it uses as much as digits as its factorization.

66002113031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 66002113031 its reverse (13031120066), we get a palindrome (79033233097).

The spelling of 66002113031 in words is "sixty-six billion, two million, one hundred thirteen thousand, thirty-one".