66020201598031 has 2 divisors, whose sum is σ = 66020201598032. Its totient is φ = 66020201598030.

The previous prime is 66020201598019. The next prime is 66020201598049. The reversal of 66020201598031 is 13089510202066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66020201598031 - 2²⁹ = 66019664727119 is a prime.

It is a super-2 number, since 2×66020201598031² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66020201598061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33010100799015 + 33010100799016.

It is an arithmetic number, because the mean of its divisors is an integer number (33010100799016).

Almost surely, 2^{66020201598031} is an apocalyptic number.

66020201598031 is a deficient number, since it is larger than the sum of its proper divisors (1).

66020201598031 is an equidigital number, since it uses as much as digits as its factorization.

66020201598031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 66020201598031 in words is "sixty-six trillion, twenty billion, two hundred one million, five hundred ninety-eight thousand, thirty-one".