66103317838 has 8 divisors (see below), whose sum is σ = 99160232688. Its totient is φ = 33049906944.

The previous prime is 66103317827. The next prime is 66103317851. The reversal of 66103317838 is 83871330166.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828306 + ... + 904597.

It is an arithmetic number, because the mean of its divisors is an integer number (12395029086).

Almost surely, 2^66103317838 is an apocalyptic number.

66103317838 is a deficient number, since it is larger than the sum of its proper divisors (33056914850).

66103317838 is a wasteful number, since it uses less digits than its factorization.

66103317838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751978.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 66103317838 in words is "sixty-six billion, one hundred three million, three hundred seventeen thousand, eight hundred thirty-eight".