66998882245 has 8 divisors (see below), whose sum is σ = 80400343320. Its totient is φ = 53597982720.

The previous prime is 66998882201. The next prime is 66998882299. The reversal of 66998882245 is 54228889966.

It can be written as a sum of positive squares in 4 ways, for example, as 11218834561 + 55780047684 = 105919^2 + 236178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66998882245 - 2¹¹ = 66998880197 is a prime.

It is a super-3 number, since 3×66998882245³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194901 + ... + 414709.

It is an arithmetic number, because the mean of its divisors is an integer number (10050042915).

Almost surely, 2^66998882245 is an apocalyptic number.

It is an amenable number.

66998882245 is a deficient number, since it is larger than the sum of its proper divisors (13401461075).

66998882245 is a wasteful number, since it uses less digits than its factorization.

66998882245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280775.

The product of its digits is 119439360, while the sum is 67.

The spelling of 66998882245 in words is "sixty-six billion, nine hundred ninety-eight million, eight hundred eighty-two thousand, two hundred forty-five".