66307142497 has 12 divisors (see below), whose sum is σ = 69976405440. Its totient is φ = 62711419232.

The previous prime is 66307142477. The next prime is 66307142513. The reversal of 66307142497 is 79424170366.

It is not a de Polignac number, because 66307142497 - 2²³ = 66298753889 is a prime.

It is a super-2 number, since 2×66307142497² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66307142497.

It is not an unprimeable number, because it can be changed into a prime (66307142437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204 + ... + 364162.

It is an arithmetic number, because the mean of its divisors is an integer number (5831367120).

Almost surely, 2^66307142497 is an apocalyptic number.

It is an amenable number.

66307142497 is a deficient number, since it is larger than the sum of its proper divisors (3669262943).

66307142497 is an equidigital number, since it uses as much as digits as its factorization.

66307142497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364160 (or 364071 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 66307142497 in words is "sixty-six billion, three hundred seven million, one hundred forty-two thousand, four hundred ninety-seven".