66290062889 has 4 divisors (see below), whose sum is σ = 66729070080. Its totient is φ = 65851055700.

The previous prime is 66290062879. The next prime is 66290062907. The reversal of 66290062889 is 98826009266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98826009266 = 2 ⋅49413004633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66290062889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66290062879) 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 3 ways as a sum of consecutive naturals, for example, 219503369 + ... + 219503670.

It is an arithmetic number, because the mean of its divisors is an integer number (16682267520).

Almost surely, 2^66290062889 is an apocalyptic number.

It is an amenable number.

66290062889 is a deficient number, since it is larger than the sum of its proper divisors (439007191).

66290062889 is a wasteful number, since it uses less digits than its factorization.

66290062889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439007190.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 66290062889 in words is "sixty-six billion, two hundred ninety million, sixty-two thousand, eight hundred eighty-nine".