66898593349 has 16 divisors (see below), whose sum is σ = 76723681536. Its totient is φ = 57140899200.

The previous prime is 66898593347. The next prime is 66898593353. The reversal of 66898593349 is 94339589866.

It is not a de Polignac number, because 66898593349 - 2¹ = 66898593347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66898593347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2322264 + ... + 2350894.

It is an arithmetic number, because the mean of its divisors is an integer number (4795230096).

Almost surely, 2^66898593349 is an apocalyptic number.

It is an amenable number.

66898593349 is a deficient number, since it is larger than the sum of its proper divisors (9825088187).

66898593349 is a wasteful number, since it uses less digits than its factorization.

66898593349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29796.

The product of its digits is 302330880, while the sum is 70.

The spelling of 66898593349 in words is "sixty-six billion, eight hundred ninety-eight million, five hundred ninety-three thousand, three hundred forty-nine".