66883638352634 has 8 divisors (see below), whose sum is σ = 106226955030708. Its totient is φ = 31474653342400.

The previous prime is 66883638352621. The next prime is 66883638352639. The reversal of 66883638352634 is 43625383638866.

It can be written as a sum of positive squares in 2 ways, for example, as 62896240411225 + 3987397941409 = 7930715^2 + 1996847^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66883638352639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983582916917 + ... + 983582916984.

Almost surely, 2^{66883638352634} is an apocalyptic number.

66883638352634 is a deficient number, since it is larger than the sum of its proper divisors (39343316678074).

66883638352634 is a wasteful number, since it uses less digits than its factorization.

66883638352634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967165833920.

The product of its digits is 2149908480, while the sum is 71.

The spelling of 66883638352634 in words is "sixty-six trillion, eight hundred eighty-three billion, six hundred thirty-eight million, three hundred fifty-two thousand, six hundred thirty-four".