66888961337 has 32 divisors (see below), whose sum is σ = 74961137664. Its totient is φ = 59174438400.

The previous prime is 66888961259. The next prime is 66888961339. The reversal of 66888961337 is 73316988866.

It is not a de Polignac number, because 66888961337 - 2²⁶ = 66821852473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66888961339) 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 31 ways as a sum of consecutive naturals, for example, 35074538 + ... + 35076444.

It is an arithmetic number, because the mean of its divisors is an integer number (2342535552).

Almost surely, 2^66888961337 is an apocalyptic number.

It is an amenable number.

66888961337 is a deficient number, since it is larger than the sum of its proper divisors (8072176327).

66888961337 is a wasteful number, since it uses less digits than its factorization.

66888961337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549.

The product of its digits is 62705664, while the sum is 65.

The spelling of 66888961337 in words is "sixty-six billion, eight hundred eighty-eight million, nine hundred sixty-one thousand, three hundred thirty-seven".