66430742137 has 16 divisors (see below), whose sum is σ = 68627088000. Its totient is φ = 64273233024.

The previous prime is 66430742129. The next prime is 66430742159. The reversal of 66430742137 is 73124703466.

It is a cyclic number.

It is not a de Polignac number, because 66430742137 - 2³ = 66430742129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66430742093 and 66430742102.

It is not an unprimeable number, because it can be changed into a prime (66430742437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769164 + ... + 1806322.

It is an arithmetic number, because the mean of its divisors is an integer number (4289193000).

Almost surely, 2^66430742137 is an apocalyptic number.

It is an amenable number.

66430742137 is a deficient number, since it is larger than the sum of its proper divisors (2196345863).

66430742137 is a wasteful number, since it uses less digits than its factorization.

66430742137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37680.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66430742137 in words is "sixty-six billion, four hundred thirty million, seven hundred forty-two thousand, one hundred thirty-seven".